Does anyone know how long ONR can keep its cleaning ability if it has been diluted for washing? I use it for cleaning windows more and more, and I would like to keep a bucket already made and also dedicated just for that. A spray bottle will not work for me because I like to use a sponge soaked in the ONR solution. I do squeeze it out first but it is still wet when its put to the window. This works so well and makes cleaning them so easy. If I’m able to devote a wash bucket specifically for this it would be very cost effective because it would last forever. Thanks everyone.