The combination of this machine with the PRO Oxy Spot & Stain Formula does a nice job of removing stains left on our carpet by our cats rubbing their rears across the carpet. You can use a lot of the formula quickly if you are not careful as the sprayer puts out ample amounts of the formula. I found it best to carefully spray the stain first and let it set for about 5 minutes before using the PowerBrush.