Yep, just the stuff from the auto store. There are the 2 types. One is "earth friendly" and not as toxic. I have only seen one article that said the "earth friendly" type would work, too. I prefer the toxic stuff because I had roots getting into the crawlspace, spiders, - well, a lot of stuff. Borate is available as borax (20 Mule Team) or as boric acid (Cockroach powder). If you got to http://www.google.com
and do a search for "borate glycol"(without the " ") you will find a lot of sites with different recipes - that I can't think of off the top of my head. What I did was mix 1qt of antifreeze with 12oz hot water that had about 3/4 cup of 20 Mule Team Borax disolved in it. I boiled the water and added the borax while it was still hot. I put the mix into a spray bottle (like windex bottle) after it cooled and used that to spray. Just make sure the bottle is clean of other stuff (or buy an empty one) and make sure the borax is disolved or it will clog the sprayer.