Snow Foam Lance Directly sprays foam. Cleansers don't pass the pump for longer pump's life so you can use chemicals like bleach, vingar and etc. Thicker and dense foam stays on the surface longer for better cleaning performance. 4 Universal Tips The 0 tip delivers super high pressure for dissolving stubborn substances on hard surface. The 15 tip delivers high pressure for concrete and bric with hard surface. The 25 tip delivers medium pressure for wood decks, viynl sidings with soft surface.