If your trying to find out how to clean spots off carpet I do not recommend using the Spot Shot line of products. Not only are they toxic with several ingredients you don't want in your home or in the sewer treatment system but they cause as many stains as they remove. I clean carpets for a living in Tampa FL and I can tell you that the carpet cleaning product in this video will remove the spots from your carpet but it will leave something worse behind.
This product contains liquefied Petrolium Gases that are considered to be high risk for Cancers. Not too surprising this product is made by the WD-40 Company, who make several cleaning solutions and most famously their line of mechanical lubricants. Not something I want to spray in my home or on my carpet.
Spot Shot also contains 2-Butoxyethanol which is a powerful industrial surfactant that breaks the surface tension of soil in your carpet, allowing it to be easily removed. The problem is that surfactants are not easily removed and carpet cleaning products containing high amounts of them, like Spot Shot, leave a significant of residue that collects and traps soil back into the carpet. As a professional carpet cleaner I do not recommend this product.
So if you need to know how to clean spots off of carpet I recommend using Chem-Dry's World Famous Spot Remover. It's a professional grade spot remover that is green certified and does not contain any surfactants or soaps. It leaves no dirt attracting residue and works great on almost any water based spot on your carpet. I use it professionally and have several customers who swear by it as their go to cleaner. If you would like a bottle of Chem-Dry's World Famous Spot Remover call your local Chem-Dry and they will deliver you a bottle from their truck.