If pet stains and odors are the main job, get the BISSELL Little Green ProHeat Pet portable deep cleaner; if you want a bigger clean-solution tank and a wide-path tool for larger spots, get the Hoover CleanSlate Plus portable carpet and upholstery spot cleaner. The BISSELL heats cleaning solution to 120 degrees Fahrenheit in under 30 seconds to lift tough stains and pet urine odor, pairs that heat with powerful spray and suction for carpet, upholstery and auto interiors, and bundles a Pet Pro Oxy Triple Action formula with StainProtect plus a self-cleaning tough stain tool. The Hoover answers with a 40-ounce dual-tank system that keeps clean and dirty water separate, a 7-inch WidePath tool for large areas, a TightSpot tool for crevices and a hose rinse tool that flushes the system with fresh water, and it includes a trial oxy cleaning solution. On 09/13/2026 both exact-model Amazon US pages showed an exact-variant buybox backed by Amazon with quantity selector, Add to cart and Buy Now, while both main prices sat behind an add-to-cart step, so no price is stated here — check the live pages for the current figures.
Choose by your situation
| Situation | Model to consider | Main tradeoff |
|---|---|---|
| Your stains are mostly pet messes and set-in odors, and you want heated solution plus a triple-action formula with stain protection | BISSELL ProHeat Pet cleaner | No tank capacity is stated in the observed page blocks, and its captured rating base is small at 161 ratings, so it offers less documented capacity and less review history than the Hoover velocity signal. |
| You clean larger spills and want longer runs between refills, wide-path coverage, and a hose rinse that flushes the machine clean | Hoover CleanSlate Plus cleaner | Heavier at 9.4 pounds with a 14 by 10.5 by 13 inch body, and no heated-solution claim or stain-protection formula claim appears on the observed page. |
The two cleaners, side by side
| Criterion | BISSELL ProHeat Pet 3969 | Hoover CleanSlate Plus FH14050 |
|---|---|---|
| Cleaning approach observed | ProHeat technology heats solution to 120 degrees Fahrenheit in under 30 seconds; heated cleaning aimed at waxy messes; powerful spray and suction across carpet, upholstery and auto interiors | Powerful suction with Oxy action; dual-tank system with 40-ounce clean solution capacity; trial oxy cleaning solution included; pair with Hoover carpet shampoo, Pet or Everyday formulas |
| Tools observed | Self-cleaning tough stain tool in the title; Pet Pro Oxy Triple Action formula included, removing set-in stains, eliminating odors and preventing future stains with StainProtect | 7-inch WidePath tool for large areas; TightSpot tool for crevices and tough-to-reach places; hose rinse tool that flushes the system with fresh water |
| Size and weight stated | Weight and dimensions are not stated in the observed page blocks; page ranks the model third in its cleaning-machine category | 9.4 pounds; 14 inches deep by 10.5 inches wide by 13 inches high; White; page ranks the model fifteenth in its cleaning-machine category |
| Support terms on the page | Manufacturer warranty can be requested from customer service; free returns offered | Manufacturer warranty can be requested from customer service; free returns offered |
| Standing on the observed page | 4.2 out of 5 stars across 161 ratings; 100+ bought in past month | 2K+ bought in past month in the glance block with a 200+ bought in past week line in the quick-view module; the snapshot glance block carries no star-rating line, so no rating is claimed here |
BISSELL ProHeat Pet: the heated pet-stain pick
The BISSELL Little Green ProHeat Pet portable deep cleaner, model 3969 suits buyers whose messes are pet-driven: solution heated to 120 degrees Fahrenheit in under 30 seconds lifts and loosens tough stains and targets odors such as pet urine, while the Triple Action formula with StainProtect removes set-in stains, eliminates odors and helps prevent future staining. Powerful spray and suction carry that combination across soft surfaces including carpet, upholstery and auto interiors, and the self-cleaning tough stain tool keeps the tool itself ready. Its limits are documentation depth: the observed page blocks state no tank capacity, weight or dimensions, and the rating base is 161 ratings at 4.2 out of 5. The Amazon US exact-model page observed on 09/13/2026 showed an exact-variant buybox backed by Amazon with Add to cart and Buy Now; the main price sat behind an add-to-cart step, so confirm the live price, and note the page also carries other-seller surfaces that are not the cited offer.
Hoover CleanSlate Plus: the big-tank coverage pick
The Hoover CleanSlate Plus portable carpet and upholstery spot cleaner, model FH14050 suits buyers who want coverage and runtime: a 40-ounce dual-tank system separates clean and dirty water so cleaning runs go further, the 7-inch WidePath tool clears large areas quickly, the TightSpot tool reaches crevices, and the hose rinse tool flushes the system with fresh water so the machine is ready for the next mess. It arrives with a trial oxy cleaning solution and pairs with Hoover Pet or Everyday formulas, in a 9.4-pound White body measuring 14 by 10.5 by 13 inches. Its limits are heat and chemistry paper trail: no heated-solution claim and no stain-protection formula claim appear on the observed page. The Amazon US exact-model page observed on 09/13/2026 showed an exact-variant buybox backed by Amazon with Add to cart and Buy Now; the main price sat behind an add-to-cart step, so confirm the live price and model before deciding.
Where to check the exact models
Compare the BISSELL Little Green ProHeat Pet portable deep cleaner (exact-variant offer backed by Amazon, observed 09/13/2026, price not shown) against the Hoover CleanSlate Plus portable spot cleaner (exact-variant offer backed by Amazon, observed 09/13/2026, price not shown). Same portable spot-cleaner idea, different answer: pick the BISSELL for heated pet-stain chemistry, the Hoover when tank capacity and wide-path coverage change the job.