My pre-spray is based on Corey Thibodauxs plant based concentrate (two caps of "Home made simple and one cap of Oxi clean white revive roped up to one gallon). I mix 8 oz of that concentrate and 16 oz of 20 vol peroxide per gallon of warm water as my pre-spray. I spot with straight Ammonia or 20 vol peroxide depending on the stain. I used ammonia on the olive oil stains and ended up going back over the stains with 20 vol. It worked pretty well. The proof will be in a couple of weeks if it doesn't wick back.
What prespray?
My pre-spray is based on Corey Thibodauxs plant based concentrate (two caps of "Home made simple and one cap of Oxi clean white revive roped up to one gallon). I mix 8 oz of that concentrate and 16 oz of 20 vol peroxide per gallon of warm water as my pre-spray. I spot with straight Ammonia or 20 vol peroxide depending on the stain. I used ammonia on the olive oil stains and ended up going back over the stains with 20 vol. It worked pretty well. The proof will be in a couple of weeks if it doesn't wick back.