Aquascape®️ 22011 Professional Foam Gun Cleaner. The Aquascape Professional Foam Gun Cleaner makes working with waterfall foam easier than ever. If not properly cleaned, foam applicator guns can become clogged, making them difficult to use. This handy cleaner will work to flush the foam gun clean of any existing foam or debris, allowing the gun to work like new again. Professional Foam Gun Cleaner will also remove uncured foam from an undesired location when necessary.