P1
Product 1: Shark CarpetXpert Upright Carpet, Area...
4.4
Most reviewers report strong results on common set-in stains (mud, wine, tea, pet urine/vomit, and older upholstery marks), especially when using the handheld tools for focused agitation and extraction. One controlled test found upright performance lagged on thicker, greasy food soils like peanut butter, leaving some staining after many passes.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.2
Most reviews report excellent stain-lifting on typical set-in messes (mud, wine, coffee, pet accidents) with a few passes and pre‑treating. Very old or deeply embedded stains can remain, and premium models like HydroSteam/Big Green tend to do better on the toughest jobs.