One thing I've heard about using this spray is that it is important to use it in a well ventilated area (probably says that part on the can) and also to let it dry COMPLETELY before putting your animals back in the cage. I don't think it says that part since it isn't labeled for use with animals.
Other than that, I think Rhasputin's got you covered. You can also get it at walmart if that is more convenient for you.