Cordless carpet cleaners are built for one job: attacking stains the moment they happen, without dragging a full-size machine out of the closet. The Shark StainForce HX102BRN stands out as the best overall pick here because it is the only truly cordless option in this lineup, pairing lithium battery power with a dedicated pet tool and odor-removal formula. If your messes tend to be larger than a spot, the BISSELL Little Green Pet Pro offers stronger suction and a bigger tank, but it trades away that grab-and-go freedom for a power cord. The core tradeoff in this category is convenience versus cleaning power — battery-powered spot cleaners are faster to deploy, while corded portables and compacts handle bigger, older, set-in stains more effectively. Keep reading for the full breakdown of where each model wins and where it falls short.
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Key Takeaways
- The Shark StainForce is the only genuinely cordless model in this lineup; every BISSELL and Hoover option here is a corded portable or compact, so buyers chasing true grab-and-go convenience have exactly one path.
- Tank size is the biggest practical differentiator: the Little Green Mini’s small tanks make it great for single spills but frustrating for multi-room touch-ups, while the Little Green Pet Pro and TurboClean hold enough capacity for full pet-incident cleanup.
- Dedicated pet models (Pet Pro, PowerDash Pet, TurboClean Pet) earned their spots through enzyme-boosted formulas and hair-rinse tools, not raw specs — worth paying extra for only if pet messes are your main problem.
- Upright-style compact cleaners like the Hoover PowerDash and BISSELL TurboClean bridge spot cleaning and whole-room cleaning, but neither replaces a full-size extractor for wall-to-wall carpets.
- Across all six products, heated cleaning and self-cleaning rinse cycles appeared only at the higher price points, which is why the mid-range Little Green Pet Pro landed above the cheaper Little Green models despite the price gap.
| Shark StainForce Cordless Stain, Odor & Urine Remover, HX102BRN |  | Best Truly Cordless Pick | Weight: Under 3 lbs | Power: Cordless (rechargeable) | Solution System: Dual-chamber refill with separate solutions | VIEW LATEST PRICE | See Our Full Breakdown |
| BISSELL TurboClean Pet Upright Carpet & Upholstery Cleaner, 3948 |  | Best for Whole-Room Pet Messes | Model: 3948 | Type: Upright carpet & upholstery cleaner | Brush System: 4-Row DeepReach PowerBrush | VIEW LATEST PRICE | See Our Full Breakdown |
| BISSELL Little Green Multi-Purpose Portable Carpet Cleaner, 1400B |  | Best Value Workhorse | Model: 1400B | Brand: BISSELL | Tank Capacity: 48 oz | VIEW LATEST PRICE | See Our Full Breakdown |
| Hoover PowerDash Pet Compact Carpet Cleaner |  | Best for Fast-Drying High-Traffic Areas | Design: Lightweight compact upright | Brush Roll: Antimicrobial PowerSpin Pet Brush Roll | Drying Technology: HeatForce | VIEW LATEST PRICE | See Our Full Breakdown |
| BISSELL Little Green Mini Portable Carpet Cleaner, 4075 |  | Best Compact Pick for Small Jobs | Model: 4075 (Little Green Mini) | Brand: BISSELL | Type: Portable carpet & upholstery cleaner | VIEW LATEST PRICE | See Our Full Breakdown |
| BISSELL Little Green Pet Pro Portable Carpet Cleaner, 3909 |  | Best Corded Alternative for Pet Messes | Brand: BISSELL | Model Number: 3909 | Cleaning Formula: Pet Pro OXY | VIEW LATEST PRICE | See Our Full Breakdown |
| cordless carpet cleaner | Power | Model | Type | Brand |
|---|---|---|---|---|
| Shark StainForce Cordless Stai | Cordless (rechargeable) | — | — | — |
| BISSELL TurboClean Pet Upright | Corded | 3948 | Upright carpet & upholstery cleaner | — |
| BISSELL Little Green Multi-Pur | Corded | 1400B | Portable carpet & upholstery cleaner | BISSELL |
| Hoover PowerDash Pet Compact C | Corded | — | — | — |
| BISSELL Little Green Mini Port | Corded | 4075 (Little Green Mini) | Portable carpet & upholstery cleaner | BISSELL |
| BISSELL Little Green Pet Pro P | — | — | — | BISSELL |
More Details on Our Top Picks
Shark StainForce Cordless Stain, Odor & Urine Remover, HX102BRN
The StainForce is the only genuinely cordless machine in this lineup, which is exactly why it earns the top spot for anyone prioritizing grab-and-go stain response. At under 3 lbs, it can live in a mudroom or car trunk, and the dual-chamber solution system keeps the two formulas separate until they meet on the stain — a design that translates to fresher, more active cleaning chemistry than the premixed tanks on the BISSELL Little Green Mini. Two swappable tools let you switch between pinpoint pet accidents and wider spills. The tradeoff is raw power: with no powered brush roll like the Hoover PowerDash Pet, this is a spot treater, not a carpet refresher, and battery life means you’re working in short sessions.
Pros:- Truly cordless and under 3 lbs for one-handed, anywhere cleaning
- Dual solutions activate on contact for stronger stain and odor breakdown
- Two included tools cover both precision spots and wider messes
- Works beyond carpet — cars, stairs, and outdoor furniture
Cons:- No powered brush roll, so deep or ground-in stains demand manual effort
- Battery-dependent — mid-cleanup recharges interrupt bigger jobs
- Small solution capacity means frequent refills on multi-stain days
Best for: Pet owners and parents who want an instant, grab-anywhere response to fresh stains on carpet, upholstery, car seats, and outdoor furniture
Not ideal for: Anyone with set-in, ground-in stains or whole-room cleaning needs — the manual scrubbing and compact size can’t match upright machines like the TurboClean Pet
- Weight:Under 3 lbs
- Power:Cordless (rechargeable)
- Solution System:Dual-chamber refill with separate solutions
- Tools Included:Stain Eliminator Tool, Wide Stain Tool
- Brush Features:Reversible bristles
- Included Accessories:Charging cable, storage tray
- Best Use:Spot stains, odors, and pet urine on multiple surfaces
Our verdict“This is the pick for buyers whose main goal is cordless convenience for fresh messes, not deep carpet restoration.”
BISSELL TurboClean Pet Upright Carpet & Upholstery Cleaner, 3948
Unlike the handheld options here, the TurboClean Pet brings upright muscle to the category, with a 4-row DeepReach PowerBrush that agitates carpet fibers in a way the Shark StainForce simply can’t. That makes it the right choice when pet accidents aren’t isolated spots but recurring problems across high-traffic zones. The 7-foot hose and spraying crevice tool extend its reach to stairs and furniture, closing the gap with portables like the Little Green. Buyers should know it still leans compact — that’s a storage win, but it means multiple passes on deep stains and smaller tanks than full-size extractors. Ongoing formula costs also add up faster than with the machines that sip solution.
Pros:- 4-row DeepReach PowerBrush loosens ground-in dirt handheld tools leave behind
- 7-foot hose and crevice tool handle stairs, upholstery, and edges
- Compact upright footprint stores easily despite upright power
- Includes both everyday and pet urine-eliminator formulas
Cons:- Deep or old stains often need multiple passes to fully lift
- BISSELL formula refills are a recurring expense
- Small tank size limits continuous cleaning of larger rooms
Best for: Households with multiple pets and repeated messes across carpets, stairs, and upholstery who need powered scrubbing, not just spot treatment
Not ideal for: Buyers wanting true cordless freedom or a machine for occasional single stains — it’s bulkier and more machine than light-duty users need
- Model:3948
- Type:Upright carpet & upholstery cleaner
- Brush System:4-Row DeepReach PowerBrush
- Hose Length:7 ft
- Included Tools:Self-Cleanout Tool, Spraying Crevice Tool
- Formulas Included:PRO MAX Clean + Protect, Pet Pro OXY Urine Eliminator
- Power:Corded
Our verdict“The strongest cleaner in this batch — choose it when pet messes span rooms, not just corners.”
BISSELL Little Green Multi-Purpose Portable Carpet Cleaner, 1400B
The original Little Green remains the value benchmark because it gets the fundamentals right: a 48 oz tank that’s roughly double the working capacity of the Little Green Mini, meaning fewer mid-job refills when a spill session turns into a full afternoon. Compared with the TurboClean Pet, you give up the powered brush roll and accept more hands-on scrubbing, but you also pay noticeably less and get a lighter, easier-to-carry body. Spray, suction, and a hose tool handle most fresh and moderate stains reliably. Its weakness is persistence — stubborn or older stains usually need repeat passes, and there’s no self-cleaning hose cycle like the Mini’s HydroRinse, so maintenance is more manual.
Pros:- 48 oz tank supports long cleaning sessions without refills
- Lower price than powered upright alternatives
- Lightweight, portable body moves easily between rooms and cars
- Proven spray-and-suction system lifts stains and odors effectively
Cons:- Tough stains often require multiple passes
- No powered brush roll for agitating ground-in dirt
- Hose and tank cleanup is fully manual
Best for: Budget-conscious buyers who want proven spray-and-suction stain removal with enough tank capacity for multi-stain sessions
Not ideal for: Those expecting one-pass results on set-in stains, or pet-heavy homes better served by the TurboClean Pet’s powered brushing
- Model:1400B
- Brand:BISSELL
- Tank Capacity:48 oz
- Type:Portable carpet & upholstery cleaner
- Cleaning Method:Spray, scrub, and suction
- Power:Corded
- Best For:Stains and odors on carpet, upholstery, and auto interiors
Our verdict“The dependable, affordable middle ground for buyers who want capacity and capability without upright cost or bulk.”
Hoover PowerDash Pet Compact Carpet Cleaner
Where the Little Green leaves carpets damp for hours, the PowerDash Pet’s HeatForce technology cuts drying time dramatically — a real advantage if you’re cleaning hallways and entryways that can’t be closed off. Its antimicrobial PowerSpin Pet Brush Roll actively resists odor-causing buildup inside the machine, addressing the hose-and-tank funk that portable extractors are known for. Against the BISSELL TurboClean Pet, it’s the lighter, simpler alternative, trading some deep-scrubbing aggression for easier handling and storage. The catch is ecosystem lock-in: Hoover recommends its own solutions for best results, and the compact body means full rooms take longer since each pass covers less ground.
Pros:- HeatForce drying technology gets carpets back in service faster
- Antimicrobial brush roll resists odor buildup between cleans
- Very lightweight and easy to store in closets or small spaces
- Handles pet stains, odors, and everyday spills across rugs and upholstery
Cons:- Performs best with Hoover-brand solution, adding recurring cost
- Compact size slows down cleaning of larger carpeted areas
- Less powerful on deep, set-in pet stains than upright rivals
Best for: Apartment dwellers and busy households cleaning area rugs and high-traffic carpet who need surfaces dry and usable again quickly
Not ideal for: Large homes with wall-to-wall carpeting — the compact footprint makes big-area jobs slow and tank refills frequent
- Design:Lightweight compact upright
- Brush Roll:Antimicrobial PowerSpin Pet Brush Roll
- Drying Technology:HeatForce
- Recommended Surfaces:Carpets, upholstery, and area rugs
- Recommended Uses:Pet stains, odors, and everyday spills
- Included:Sample cleaning solution
- Power:Corded
Our verdict“The pick when drying speed and pet-odor control matter more than raw extraction power.”
BISSELL Little Green Mini Portable Carpet Cleaner, 4075
The Little Green Mini shrinks the formula to its smallest, most storable form — ideal for dorm rooms, RVs, and car interiors where even the standard Little Green feels oversized. Its standout convenience feature is the HydroRinse self-cleaning hose tool, which flushes the hose after use and solves one of the most annoying parts of portable extractor ownership. It also handles an impressive surface range for its size, from upholstery to pet beds. Compared with the Shark StainForce, you get stronger suction-based extraction but lose true cordless freedom, since the Mini still needs an outlet. The 8 oz formula sample runs out quickly, and manual spray-and-scrub effort adds real labor on anything beyond small spots.
Pros:- Smallest footprint in the lineup — stores in a cabinet or car trunk
- HydroRinse tool self-cleans the hose for easier maintenance
- Versatile across upholstery, car interiors, stairs, and pet beds
- 4-inch Tough Stain Tool with removable lens simplifies cleanup
Cons:- Small tank and 8 oz formula bottle need frequent refills
- Manual spray-and-scrub requires more effort than powered machines
- Corded design limits where you can clean on the go
Best for: City apartment residents, RV owners, and car-detailing enthusiasts who clean tight spaces and small spots more than broad carpet
Not ideal for: Families tackling large carpeted areas or multiple big messes — the tiny tank and manual scrubbing make those jobs tedious
- Model:4075 (Little Green Mini)
- Brand:BISSELL
- Type:Portable carpet & upholstery cleaner
- Included Tools:4-inch Tough Stain Tool with removable lens, HydroRinse self-cleaning tool
- Formula Included:8 oz BISSELL Little Green Formula
- Cleaning Method:Spray, scrub, and lift with suction
- Power:Corded
- Best For:Small or hard-to-reach areas: car interiors, pet beds, upholstery
Our verdict“The right mini machine for buyers whose messes are small, frequent, and mostly in tight spaces.”
BISSELL Little Green Pet Pro Portable Carpet Cleaner, 3909
Full transparency: the Little Green Pet Pro is corded, so it lands here as the plug-in alternative for shoppers who value raw suction over untethered mobility. That matters because the Shark StainForce HX102BRN, while fully cordless, simply can’t match the cleaning power of a wall-powered motor — and for dried, smelly pet stains, suction is what pulls the mess out instead of soaking it deeper. Compared with the Little Green Mini (4075), this model’s larger tanks mean fewer trips to the sink mid-clean, which makes a real difference when a dog has an upset stomach across the living room. The tradeoff is obvious: you’re tethered to an outlet and this is a spot cleaner, not a whole-room machine like the TurboClean Pet 3948.
Pros:- Strongest suction in this lineup for lifting set-in pet stains and odors
- Works across carpets, upholstery, auto interiors, and pet beds
- Large tank capacity reduces interruptions during multi-spot cleanups
- Purchase supports BISSELL Pet Foundation’s pet rescue efforts
- Bundled Pet Pro OXY formula targets urine and organic stains specifically
Cons:- Corded design limits mobility compared with true cordless spot cleaners
- Only suited to small spot-cleaning areas, not full rooms
- Needs BISSELL-specific formulas for best results, adding ongoing cost
Best for: Pet owners dealing with recurring stains and odors on carpet, upholstery, or car interiors who care more about deep extraction power than cordless freedom
Not ideal for: Anyone who needs grab-and-go cordless convenience for quick spills — the power cord and manual tank filling make it slower for one-swipe messes
- Brand:BISSELL
- Model Number:3909
- Cleaning Formula:Pet Pro OXY
- Power Source:Corded electric
- Suitable Surfaces:Carpet, upholstery, auto interiors, pet beds
- Category Rank:#8 in Carpet & Upholstery Cleaning Machines
- Charity Tie-in:Supports BISSELL Pet Foundation
Our verdict“Buy this if pet stains are your number one problem and you’ll trade cordless convenience for noticeably stronger extraction than any battery-powered rival can offer.”
How We Picked
I evaluated each model against what actually drives satisfaction in this category: stain-removal power, setup speed, tank capacity relative to machine size, ease of emptying and cleaning, and value per dollar. Because this roundup is anchored to cordless convenience, I weighted deployability heavily — how quickly a machine can go from closet to stain — which is why the battery-powered Shark StainForce claimed the top spot even though corded rivals out-clean it on large messes. Maintenance burden mattered too: models with self-cleaning hose cycles ranked above those requiring manual rinse-outs.
The ranking logic then split the field by role rather than raw score. The Little Green Pet Pro took the premium slot for its superior suction and pet-specific tooling, the Hoover PowerDash Pet earned best value as the cheapest machine that still handles whole areas, and the Little Green Mini serves beginners with dead-simple operation at an entry price. The original Little Green and TurboClean Pet fill niche roles — upholstery versatility and upright-style cleaning respectively — that the other four don’t cover as well.
| cordless carpet cleaner | Power | Type |
|---|---|---|
| Shark StainForce Cordless Stai | Cordless (rechargeable) | — |
| BISSELL TurboClean Pet Upright | Corded | Upright carpet & upholstery cleaner |
| BISSELL Little Green Multi-Pur | Corded | Portable carpet & upholstery cleaner |
| Hoover PowerDash Pet Compact C | Corded | — |
| BISSELL Little Green Mini Port | Corded | Portable carpet & upholstery cleaner |
| BISSELL Little Green Pet Pro P | — | — |
Factors to Consider When Choosing Cordless Carpet Cleaners
Before settling on a specific model, it helps to understand the broader landscape of spot and compact cleaners — because the marketing language rarely matches how these machines behave in real homes. These are the factors that separate a satisfying purchase from a dusty closet appliance.True Cordless Versus Corded Portable
The biggest naming trap in this category is that most “portable” carpet cleaners are not cordless. Machines like the Little Green line and the Hoover PowerDash still need a wall outlet, which changes how you use them: you are managing cord length, hunting for outlets, and accepting a slower response to fresh spills. A battery-powered unit like the Shark StainForce lets you treat a stain within seconds of it happening, which matters because fresh stains are dramatically easier to remove than dried ones. The honest tradeoff is that batteries add weight, cost, and eventual replacement concerns, while corded machines deliver consistent suction indefinitely. If your stains happen in the same few rooms, a cord is a minor annoyance; if you have pets, kids, and cars to clean, cordless flexibility earns its premium.
Tank Capacity and Refill Frequency
Tank size determines how long you can clean before stopping to empty dirty water and refill clean solution — and it is the spec most buyers underestimate. A small-tank machine like the Little Green Mini needs refills after roughly one spill, which is fine for targeted spot work but tedious when a pet has an accident in multiple spots. Larger tanks add weight and bulk, which works against the grab-and-go appeal that draws people to this category in the first place. My advice: match tank size to your typical mess, not your worst-case mess. A household with occasional coffee spills needs far less capacity than one with a puppy in house training, and overbuying capacity means hauling weight you rarely use.
Suction Power and Drying Time
Suction is what determines how much dirty water comes back out of your carpet, and that has two consequences buyers often miss: how dry the surface feels afterward, and whether residual moisture leaves a stain ring or odor. Weaker suction leaves carpet damp for hours, which can wick dirt back to the surface as it dries — a common complaint with budget spot cleaners. Stronger machines like the Little Green Pet Pro pull more moisture out, shortening dry time and reducing the chance a stain reappears the next day. Neither spec sheet tells the full story, so I prioritized models with a track record of real-world recovery performance over those advertising motor wattage alone. If you live in a humid climate, this factor should weigh more heavily in your decision.
Pet-Specific Features: Are They Worth It?
Pet versions of these cleaners typically cost $20 to $40 more, and the premium buys you three things: an enzyme-based formula that breaks down odor-causing compounds rather than masking them, a rinse tool that flushes hair out of the hose, and sometimes a rubber-nubbed brush for stubborn messes. The formula is the part that genuinely matters — regular carpet solution can leave organic odors that pets detect and return to, restarting the cycle. If you do not have pets, skip the pet versions entirely; the standard models clean identically for less money. One common mistake is buying the pet machine but using off-brand solution to save money, which negates the main advantage you paid for.
Maintenance and Long-Term Ownership
Every carpet cleaner with a hose has one shared weakness: dirty water sitting in the hose and tank breeds mold and odors if the machine is not cleaned after use. Higher-priced models address this with self-cleaning rinse cycles that flush the hose with fresh water at the push of a button, while budget models require you to manually run clean water through and disassemble parts to air dry. This sounds like a minor convenience, but it is the single most common reason these machines get abandoned — a smelly unit stops being used, and stains then go untreated. Factor in solution cost as well: proprietary formulas run $10 to $20 per bottle, and heavy users go through several per year. A cheaper machine with expensive, locked-in solution can cost more over three years than a pricier model that accepts generic cleaner.
When to Skip This Category Entirely
Spot cleaners and compact machines are designed for stains under roughly a square foot, plus upholstery, stairs, and car interiors. If your actual problem is dingy, wall-to-wall carpet or high-traffic hallway wear, no machine in this roundup will satisfy you — a full-size upright extractor or a rental deep cleaner is the right tool, and buying a compact unit for that job leads to disappointment. A useful pattern: own a small spot machine for daily incidents and rent or schedule a full deep clean once or twice a year. Households with new pets, toddlers, or light-colored carpets get the most value from always having a spot cleaner ready; households with durable dark carpet and tidy adults may not need one at all. Being honest about your mess profile before buying is the cheapest decision you can make here.
Frequently Asked Questions
Is the Shark StainForce actually cordless, and does the battery last long enough?
Yes, the Shark StainForce HX102BRN runs on a rechargeable lithium battery and is the only fully cordless machine in this comparison. A full charge typically handles multiple spot-cleaning sessions, since spot work uses the motor in short bursts rather than continuously. The limitation appears when you try to use it like a full cleaning session — sustained cleaning over ten to fifteen minutes will drain the battery, and suction is naturally a step below corded rivals like the Little Green Pet Pro. It is best understood as a rapid-response tool for fresh stains rather than a machine for deep-cleaning sessions. If your typical mess is a spill that needs two minutes of attention, the battery is more than adequate; if you regularly tackle dried, ground-in stains, a corded model will serve you better.
What is the real difference between the Little Green, Little Green Mini, and Little Green Pet Pro?
The three BISSELL portables share the same core design but target different buyers. The original Little Green is the mid-size all-rounder with the longest track record and the largest accessory ecosystem. The Mini, model 4075, shrinks everything down for minimal storage footprint and lower cost, but its small tanks mean frequent refills and it ships with a simpler tool set. The Pet Pro sits at the top with stronger suction, larger tanks, a hair-rinsing tool, and an enzyme-formula bundle, making it the pick for persistent pet messes and odors. In practice, the price gaps between them are modest enough that the Pet Pro is usually worth the upgrade — unless maximum portability or minimum price is your priority, in which case the Mini makes sense.
Can the Hoover PowerDash or BISSELL TurboClean replace a full-size carpet cleaner?
Almost, but not quite — and that distinction matters. Both are compact uprights with brush rolls and decent tank capacity, so they handle small rooms, area rugs, and stairs faster than any hose-based spot cleaner. Compared with a full-size extractor, they have smaller tanks, narrower cleaning paths, and weaker suction, which means more refilling and longer dry times on large spaces. For an apartment or a home with carpet in only a couple of rooms, either one can realistically be your only carpet machine. For whole-house wall-to-wall carpet, they work well as maintenance machines between annual deep cleans but will leave you wanting more if a full extraction is the goal. The PowerDash is the cheaper of the two; the TurboClean leans further into pet messes with its brush design and formula.
Do cordless or portable carpet cleaners work on old, set-in stains?
They can, but expectations need calibrating. Fresh stains respond dramatically to these machines because the mess has not bonded to fibers yet, which is exactly the scenario spot cleaners are engineered around. Set-in stains — days or weeks old — usually require multiple treatment passes, pretreatment with a spot solution, and sometimes warm-water fills to loosen the residue, and even then complete removal is not promised. Machines with stronger suction and heated cleaning, like the Little Green Pet Pro, outperform smaller units on older stains because they pull more of the loosened residue out rather than spreading it. For pet urine specifically, enzyme treatment is the deciding factor, since no amount of suction removes odor compounds already bonded to the carpet backing. Treat old stains as a process rather than a single pass, and these machines will do their part.
Which of these is best for cleaning car interiors and upholstery?
Hose-based portables are the right shape for this job, which rules out the upright-style Hoover PowerDash and BISSELL TurboClean — their bulk and design are built for flat carpet, not seats and crevices. The Little Green line leads here because its hose and handheld tools reach into seat seams, door panels, and stairs, and its compact body sits easily in a trunk or on a step. The Little Green Mini is arguably the most car-friendly of all: it is light enough to carry one-handed to the driveway and its small tanks are rarely a limitation for seat cleaning. The Shark StainForce also performs well in vehicles specifically because it is cordless — no outlet needed in a garage or parking area. If car detailing is your primary use case, decide between the Mini for portability and the standard Little Green for its wider tool selection.
Conclusion
Choosing among these six comes down to matching the machine to your mess profile. For best overall, the Shark StainForce HX102BRN delivers the true cordless convenience this category promises, with pet and odor tools that cover the most common household stains — accept it if you value speed of response over raw power. The best value pick is the Hoover PowerDash Pet, which brings upright-style cleaning and brush-roll agitation to the lowest effective price point in the lineup. At the premium end, the BISSELL Little Green Pet Pro justifies its cost with the strongest suction, largest tanks, and pet-focused tooling among the portables. For beginners, the Little Green Mini keeps things simple, cheap, and small enough to store anywhere. Specific needs round out the map: the original Little Green for upholstery and car interiors with the best accessory flexibility, and the BISSELL TurboClean Pet for buyers who want an upright that leans hardest into pet messes. Whatever you pick, treat stains quickly — every machine here performs best when the mess is still fresh.
