The catch
BISSELL Little Green Max Pet SmartMix
The 32 oz clean tank has eight ounces less room than Hoover's.
Side by side
BISSELL Little Green Max Pet SmartMix vs Hoover CleanSlate Plus: Hoover’s recovery tank limits its larger fill, whereas Max automates rinsing prep
Quick verdict
Little Green Max Pet SmartMix is the right choice for automatic formula dosing and an easy switch to water-only rinsing. CleanSlate Plus is the right choice for its larger clean tank and included 7-inch WidePath tool. Because the Hoover's recovery tank is smaller, clean-water capacity alone doesn't tell the whole refill story.
Before you buy
Why, and what it costs you
The bigger tank switches sides
Hoover's clean tank is 25% bigger, but BISSELL's dirty tank is about 39% bigger. Choose according to how the job will fill and recover, and look past the larger clean-tank number.
Where this comes from
(32 - 23) / 23 = 39.1%. (40 - 32) / 32 = 25%.
The catch
Hoover CleanSlate Plus
You prepare the solution as prescribed, without SmartMix dosing.
BISSELL Little Green Max Pet SmartMix
- Why pick it
- You want to move from formula cleaning to a water-only rinse
- Automatic mixing, with clean and dirty tanks that are both 32 oz
- The catch
- The 32 oz clean tank has eight ounces less room than Hoover's.
Hoover CleanSlate Plus
- Why pick it
- You begin with 40 oz of clean liquid
- The wide seven-inch tool and a separate TightSpot attachment are what you'll use
- The catch
- You prepare the solution as prescribed, without SmartMix dosing.
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What this page compares
Little Green Max Pet SmartMix 38572 and CleanSlate Plus FH14050 go up against each other on automatic mixing, the balance between clean and dirty tanks, hand tools and rinsing.
Little Green Max Pet SmartMix is the right choice for automatic formula dosing and an easy switch to water-only rinsing. CleanSlate Plus is the right choice for its larger clean tank and included 7-inch WidePath tool. Because the Hoover's recovery tank is smaller, clean-water capacity alone doesn't tell the whole refill story.
Which one fits
Pick the situations that sound like you
I want the formula dosed for me
SmartMix meters the formula, and CleanSlate has no such system.
- BISSELL Little Green Max Pet SmartMix
- Good
- Hoover CleanSlate Plus
- Not suitable
My clean tank must hold 40 oz or more
Hoover holds 40 oz, BISSELL 32 oz.
- BISSELL Little Green Max Pet SmartMix
- Not suitable
- Hoover CleanSlate Plus
- Good
My recovery tank must hold 30 oz or more
Hoover is listed at 23 oz and BISSELL at 32 oz.
- BISSELL Little Green Max Pet SmartMix
- Good
- Hoover CleanSlate Plus
- Not suitable
I want a seven-inch hand tool in the box
WidePath is documented for Hoover. The BISSELL package that was selected lacks that width.
- BISSELL Little Green Max Pet SmartMix
- Not suitable
- Hoover CleanSlate Plus
- Good
I have to wet-clean a fabric labeled dry-clean only
Buying either machine does not cancel the fabric's cleaning instructions.
- BISSELL Little Green Max Pet SmartMix
- Not suitable
- Hoover CleanSlate Plus
- Not suitable
In practice
Differences you will notice
The bigger tank switches sides
Hoover's clean tank is 25% bigger, but BISSELL's dirty tank is about 39% bigger. Choose according to how the job will fill and recover, and look past the larger clean-tank number.
How we worked this out
(32 - 23) / 23 = 39.1%. (40 - 32) / 32 = 25%.
Hoover may need a recovery stop before the clean tank is used up
The listed dirty capacity is just 57.5% of the clean capacity. Recovery rates differ and not all the water you spray comes back, so treat this as a reminder to check the tank. It does not promise a number of stops.
How we worked this out
23 / 40 × 100 = 57.5%. For BISSELL, 32 / 32 = 100%. The calculation does not assume all liquid is recovered.
A mode switch suits frequent wash-and-rinse jobs
With SmartMix's water-only setting, you do not have to empty a premixed solution supply just to rinse. The gain is in workflow, and no claim is made that stains come out better.
How we worked this out
Max Clean and a water-only Rinse mode are documented for BISSELL. Hoover's platform works from a filled solution tank and relies on a separate hose-rinse accessory.
Option A
BISSELL, 38572
Little Green Max Pet SmartMix
Formula is metered automatically on this light portable, which also comes with a self-cleaning stain tool.
- Best for
- If small pet messes are frequent and you want less measuring and rinsing
Facts we checked
- Formula workflow: SmartMix automatically meters formula
- Water-only rinse: Dedicated Rinse Mode
- Clean-tank capacity: 32 oz
- Dirty-tank capacity: 32 oz
Option B
Hoover, FH14050
CleanSlate Plus
This portable spot cleaner pairs a seven-inch wide tool with a narrow crevice tool.
- Best for
- Spots of different sizes on stairs, sofas and vehicle seats
Facts we checked
- Formula workflow: Prepare solution in the clean tank as directed
- Water-only rinse: Prepare the clean tank with water for a rinse
- Clean-tank capacity: 40 oz
- Dirty-tank capacity: 23 oz
Spec by spec
Where they really differ
| Spec | BISSELL Little Green Max Pet SmartMix | Hoover CleanSlate Plus | In practice |
|---|---|---|---|
| Formula workflow | SmartMix automatically meters formula | Prepare solution in the clean tank as directed | BISSELL cuts down measuring when you clean up repeatedly. |
| Water-only rinse | Dedicated Rinse Mode | Prepare the clean tank with water for a rinse | Switching modes on BISSELL does not mean replacing what is in a premixed tank. |
| Clean-tank capacity | 32 oz | 40 oz | Hoover's clean tank has eight more ounces. |
| Dirty-tank capacity | 32 oz | 23 oz | BISSELL lists nine more ounces of recovery capacity. |
| Hand-tool emphasis | Self-Cleaning Tough Stain Tool and pet-hair tool | 7-inch WidePath, TightSpot and hose-rinse tool | Tool flushing is BISSELL's emphasis. Hoover comes with a broad hand tool and a narrow access tool. |
Trade-offs
What each pick costs you
With BISSELL Little Green Max Pet SmartMix
- Hoover's seven-inch WidePath tool is not documented in the package that was reviewed.
With Hoover CleanSlate Plus
- At 23 oz, its recovery tank is smaller than its own clean tank and than BISSELL's dirty tank.
Change of plan
When the answer changes
Essential: automatic dosing, plus a water-only mode available right away
Go with BISSELL Little Green Max Pet SmartMix. Both come with SmartMix.
I want a seven-inch tool in the box and a 40 oz clean tank
Go with Hoover CleanSlate Plus. Both come with the CleanSlate setup that was selected.
I need the clean tank at 40 oz and the recovery tank at 30 oz or more
Neither model fits. One capacity requirement is missed by each model.
Decision guide
How to decide
For automatic formula dosing and a simple switch to water-only rinsing, go with Little Green Max Pet SmartMix. For the larger clean tank and the included 7-inch WidePath tool, go with CleanSlate Plus. Keep in mind that the Hoover's recovery tank is smaller, so clean-water capacity alone doesn't settle how often you will refill.
Think about the cleanup job you repeat most
When your usual routine is washing a small patch and then rinsing it, SmartMix's water-only mode can cut down on setup hassle. When you tend to cover a wider area of sofa, Hoover's broad attachment may be the difference that counts. Spraying, scrubbing and extracting are still manual on both.
Mind the dirty tank
The two capacities pull in opposite directions. Hoover begins with more clean liquid yet has less room for recovery. Don't go on spraying just because solution is left in the clean tank. Follow the fill line on the dirty tank and stop when the recovery side says so.
Plan on maintenance once the stain is gone
Both BISSELL's self-cleaning tool and Hoover's hose-rinse tool help flush out residue, yet neither will empty or dry the tanks. Rinse the removable parts and dry them as the manual says. Formula choice and fabric compatibility still count for more than a brand's suction slogans.
What this page can’t tell you
- The tank math tells you about capacity and nothing more. Cleaning area, extraction efficiency, drying time and stain removal can't be predicted from it.
By the numbers
What the data shows
What we found across the carpet cleaners we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| BISSELL Little Green Max Pet SmartMix |
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| Hoover CleanSlate Plus |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
BISSELL Little Green Max Pet SmartMix
You want to move from formula cleaning to a water-only rinse
See price & reviews on AmazonHoover CleanSlate Plus
You begin with 40 oz of clean liquid
See price & reviews on AmazonEach link opens in a new tab.
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