Main trade-off
BISSELL Little Green
The short attachment hose requires moving the body around a sofa or vehicle.
Head-to-head
Choose Little Green 1400B for a larger clean tank and manual solution control. Max Pet SmartMix suits lighter carrying and automatic formula dosing.
Before you choose
Little Green holds 0.38 US gallon of clean liquid and Little Green Max Pet SmartMix 0.25. The difference is 16 fluid ounces before considering recovery-tank limits.
What this is based on
128 US fluid ounces =1 US gallon. Recorded capacities 48 and 32 fl oz. This normalizes tank volume without predicting cleaning coverage.
Main trade-off
The short attachment hose requires moving the body around a sofa or vehicle.
Main trade-off
The 32-ounce tanks are sized for spot work rather than a large sectional.


Choose Little Green 1400B for a larger clean tank and manual solution control. Max Pet SmartMix suits lighter carrying and automatic formula dosing.
The classic Little Green holds more clean liquid
Winner by situation
Its 48-ounce tank is 50% larger than the 32-ounce Max SmartMix tank. That matters for longer spot work, though application technique determines actual coverage.
The Max weighs 8.2 pounds against the 1400B at 9.65. Automatic dosing is useful when quick setup matters more than maximizing each fill.
The 1400B official page and Amazon carton can list different accessories. Confirm the rinse and stain tools in the selected package rather than assuming every Little Green bundle is identical.
The lighter Max has a 32-ounce clean tank against 48 ounces on1400B.
What matters in practice
Little Green holds 0.38 US gallon of clean liquid and Little Green Max Pet SmartMix 0.25. The difference is 16 fluid ounces before considering recovery-tank limits.
128 US fluid ounces =1 US gallon. Recorded capacities 48 and 32 fl oz. This normalizes tank volume without predicting cleaning coverage.
A full clean tank adds roughly 3.13 pounds of water-equivalent weight to Little Green and 2.08 pounds to Little Green Max Pet SmartMix. Move and fill according to the manual.
Approximate water mass = clean capacity in US gallons ×8.34 lb/gal. Inputs 48/128 and 32/128 gallons. Formula concentration, residual dirty water and tools change the actual total.
The lighter Max has a 32-ounce clean tank against 48 ounces on1400B.
9.65 - 8.2 = 1.45 lb. 48 - 32 = 16 US fl oz. 16 / 48 × 100 = 33.3% less nominal clean volume.

BISSELL, 1400B
The familiar portable cleaner uses a 48-ounce tank and a direct spray, scrub and extract workflow.

BISSELL, 38572
A light portable that meters formula automatically and includes a self-cleaning stain tool.
Meaningful differences
| What changes | BISSELL Little Green | BISSELL Little Green Max Pet SmartMix | Why it matters |
|---|---|---|---|
| Machine type | Portable spot cleaner | Portable spot cleaner | A spot cleaner is not an efficient replacement for a whole-room upright. |
| Nominal clean tank | 48 US fl oz | 32 US fl oz | Capacity is not a promise of area coverage. |
| Empty weight | 9.65 lb | 8.2 lb | Water, tools and solution add weight. |
| Hose | Maker page conflicts between 4 and 4.5 ft | Check exact listing | Check exact bundle contents and any conflicting model documentation. |
| Power cord | 15 ft | Check exact manual | Outlet position affects usable reach. |
| Cleaning system | Manual solution mixing and hose extraction | SmartMix automatic formula dosing | Features do not establish a matched-test cleaning winner. |
What you give up
What matters in practice
Its 48-ounce tank is 50% larger than the 32-ounce Max SmartMix tank. That matters for longer spot work, though application technique determines actual coverage.
The Max weighs 8.2 pounds against the 1400B at 9.65. Automatic dosing is useful when quick setup matters more than maximizing each fill.
The 1400B official page and Amazon carton can list different accessories. Confirm the rinse and stain tools in the selected package rather than assuming every Little Green bundle is identical.
What the facts say
Useful conclusions from the current carpet cleaners comparison, followed by the checked facts used to reach them.
All 22 models remain in view on this guide. The answer comes from the facts and trade-offs shown on the page.
22 matching models from 22 checkedMatch countNo matcher need is preselected here. Open the matcher to add the needs that apply to your home, room or setup.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| BISSELL Little Green | No positive match recorded for these needs |
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| BISSELL Little Green Max Pet SmartMix | No positive match recorded for these needs |
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Ready to choose?
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