Hot Tub Defoamer - Spa Defoamer for Hot Tub Owners 16oz, Spa Anti Foam to Keep Foam Down, HotTub Chemicals Made in The USA - AquaDocBrand: MAV AquaDoc Features: Getting more Hot Tub Foam than you bargained for? Spa foam is typically caused by soaps, oils, and cosmetics that naturally enter hot tubs during regular use. Spa jets disturb these contaminants which results in more foam. The Spa Anti Foam that Works Fast We created a Hot Tub foam eliminator that quickly removes hot tub foam, and keeps the spa foam down with regular maintenance to keep the spa foam out. The best spa