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Plus, the Shark’s accessory lineup only covers the basics — you’ll get pet cleaning, general usage and hose cleaning tools, but none of the maintenance and cleaning accessories you’d find from competitors. For instance, Bissell includes a small T-shaped tool for fishing out dust clumps from the cleaner head. Plus, the Shark’s 0.53-gallon clean water tank and 0.23-gallon dirty water tank are undersized compared to other cleaners; Bissell’s mid-range cleaners regularly sport gallon-sized tanks that’ll be enough for cleaning multiple rooms.
The Shark’s Stainstriker branding also refers to the carpet cleaner’s dual-tank cleaning system. The main cleaning tank is filled with water and cleaning formula, while a second tank gets filled with Shark’s Stainstriker cleaning solution. In handheld mode, the Shark will blend cleaning solution from both tanks for enhanced cleaning power. Despite being a mid-range carpet cleaner, the Stainstriker doesn’t include many of the features seen on comparable models. Surprisingly, the Shark has only a single brush roll for cleaning — at the Shark’s price point, most carpet cleaners will feature a dual-roll setup to cover more surface area in a single cleaning pass.In practice, Stainstriker works fine for tough stains, but it’s not necessarily a game-changing feature. After several cleaning passes, we broke down some deep stains in a foam mattress, but the Shark couldn’t entirely remove them. Competitors like the Hoover SmartWash+ also use a similar dual-tank cleaning system. All of these omissions leave the Stainstriker a slight step behind the competition. Gaps like the Shark’s smaller tank and single brush roll mean that it’ll take more passes and water changes to finish larger cleaning jobs.