VP Ph foam can be used though a foam lance or via pump sprayer and they reckon the later is the better method. I have put loads of stuff through my foam lance, Duragloss901, AS Duet, Megs shampoo+, all sorts of foam. Where i am based I need to use an anti foaming agent when I am finished to disperse the stuff but this was only after I started using a well known foam as it lay for days on end. now use a ph nuetral or a touchless foam depending on what I am doing or my own shampoo.