Where can I get a foam gun that can attach to a standard water hose locally?? I am in LA so have access to all the major home improvement / hardware stores.
lowes has a cheapie foam gun for like 10 bucks....also some use pesticide/fertilizer sprayers located in the gardening area....not as good as a gilmour foam gun...but its the best otc option
Given that you should be able to find *anything* in LA, I'd check janitorial supply places for the Gilmour gun. That's where I found my first one back before they were sold by detailing supply places. I wouldn't bother with anything except the genuine article..get the Gilmour or wait until you can.
