02-13-2013, 02:49 PM
I generally do what Rick suggested and add it to fresh solution, maybe 1 gallon old to 2 gallons fresh, max. If its about a week old, I throw it in the washing machine and clean my bonnets with it. Works brilliantly! My wife has been known to clean clothes with Punch, which, while effective, is expensive. I have to keep my chems under lock and key! But any old solution I've got is fair game.