I picked the 2 best “foam brush chemicals” and took 25 fl oz of each of the diluted chemical and added 5 gallons of water. The winners were 3) Dis™h Detergent Original Scent (dish cleaner 50 ounces) and 4) Perfect 10 Black Currant Bodywash (bodywash for your body 25 ounces). I lost the pictures for number 4 but number 3 was the best the dish detergent.