Just looked up the ingredients for this on amazon.. could make a 5gal bucket for like $20 and have a lot left over still.. i need to do my bumper mounts soon and they are nasty.. gonna try this out
P.S. have tried vinegar and it doesn't work as well for me as evaporust.. maybe wrong vinegar
Most is like 5%, and yes, pretty useless. I got 30% from Home Depot. About $20 for a gallon. I think I reduced that maybe half with water and it did good. I see amazon sells 45% at around same price. Evaporust works great when fresh.