Main trade-off
Shark StainStriker Portable
Its dual-formula routine requires two compatible products to keep stocked.
Head-to-head
PX201 suits stubborn spots when Shark's two-part formula system matches the soil. The Little Green Max is easier for routine pet cleanup because SmartMix handles dosing and its self-cleaning tool shortens the rinse step.
Before you choose
Main trade-off
Its dual-formula routine requires two compatible products to keep stocked.
Main trade-off
The 32-ounce tanks are sized for spot work rather than a large sectional.


Two portable cleaners with different approaches to formula delivery.
The practical choice turns on formula delivery and hose rinse, then on the constraints in your own setup.
Before you choose
Little Green Max SmartMix provides a Rinse Mode separate from its automatically mixed cleaning pass. For PX201, the manufacturer guide describes water-only rinsing with water in the main tank and the OXY reservoir emptied or removed as instructed. Choose Max if you frequently alternate cleaning and permitted water-rinse passes. Choose Shark if its two-part system fits your spots and that extra preparation is acceptable.
Rinsing is conditional on the surface and formula instructions. Neither process is a reason to overwet fabric, and a water-only pass should not be described as disinfecting or removing every residue.
PX201 keeps its two cleaning liquids separate before activation, and its guide notes that they can run down at different rates. Max SmartMix also separates formula from water but meters the ratio automatically. Before a short sofa job, check both reservoirs before starting rather than relying on one visible fill level. Choose by the mixing routine you prefer, without treating either system as a fixed-area cleaning guarantee.
This is a readiness check derived from separate supplies. An available water tank does not prove the required formula supply is still sufficient, and nominal capacities do not predict stain count.
Winner by situation
For formula delivery, Shark StainStriker Portable records “Two-part activation” and BISSELL Little Green Max Pet SmartMix records “Automatic SmartMix”. For formula delivery, this changes the hands-on cleaning, filling or disposal work required during ownership.
For hose rinse, Shark StainStriker Portable records “Hose-rinse procedure and attachment documented, verify included bundle” and BISSELL Little Green Max Pet SmartMix records “Self-cleaning tool”. For hose rinse, this changes the hands-on cleaning, filling or disposal work required during ownership.
Its heat or steam-assisted mode can support pretreatment on compatible fibers.
Its included tool or cycle flushes residue from the hose and cleaning path.
Its published empty weight is lower than full-size and commercial-style machines.

Shark, PX201
A compact portable that activates two formulas at the hand tool for spots and odors.

BISSELL, 38572
A light portable that meters formula automatically and includes a self-cleaning stain tool.
Meaningful differences
| What changes | Shark StainStriker Portable | BISSELL Little Green Max Pet SmartMix | Why it matters |
|---|---|---|---|
| Formula delivery | Two-part activation | Automatic SmartMix | For formula delivery, this changes the hands-on cleaning, filling or disposal work required during ownership. |
| Hose rinse | Hose-rinse procedure and attachment documented, verify included bundle | Self-cleaning tool | For hose rinse, this changes the hands-on cleaning, filling or disposal work required during ownership. |
What you give up
What the facts say
Useful conclusions from the current carpet cleaners comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Shark StainStriker Portable |
|
|
|
| BISSELL Little Green Max Pet SmartMix |
|
|
|
Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Odor and stubborn spot chemistry lead
See price & reviews on Amazon
Spots happen frequently
See price & reviews on AmazonLinks open in a new tab.