Instead of adding oxygen to the carpet, they pull it out of the carpet making the stain become invisible. Now Reducing agents are mainly used in heavy coffee stains, dyes and on rust, but the effect may wear off with time. Both Oxidizers and reducing agents should be considered as a last resort. Well, this spotter works a lot like your stomach. It helps to break down all the organic matter in your carpet making it easer to remove.
Enzymes also contain detergents and alkaline builders, and can be used as a cleaning booster too.
Enzymes need to be at 100 f but not over 150 to work. Now find a little corner in the closet and pour a little spotter onto the carpet to see if it affects the color any. Great First go to the spot ad if the is any solid debris try and remove as much as you can with your butter knife. Second pour the spotter onto the effected area and now sit and give it a couple of minutes to work. OK Taking that pot scrubbing brush tamp on the spot working the chemical into the spot but not spreading the chemical out onto the unaffected carpet.