I only use Provent a Mite. Works great and it's easy. I like easy. Any new substrate gets treated as a precaution and the QT cage gets treated before a new arrival goes in it. Quick to use and works great as a preventative. Just don't forget you pretreated a tub holding all the extra substrate and grab some out of it when you change the bedding in a T's enclosure. It really does last a while. You'll end up with a dead T.
