I have 3 gallons of the cti unopened and 1 that has been opened. 1 gallon of maxim unopened and one that has been used. They have been stored in my garage for at least a year. Garage is drywalled with a insulated garage in Calif.
I'm thinking of doing a free carpet protector offer to get rid of it and get more hardball. I love that stuff, smells good.