I am amazed that Spinosad ("Sucess" trade name) is registered for spider mites. It is almost useless against them and is only slightly effective against it's primary target: thrips. All over the world growers are having problems with thrips gaining resistance to spinosad, it has been taken off of the market some states, and they are still allowing it to be used against spider mites? That is crazy, but I guess Dow is just following the money...again...
uniondr - Ladybugs will eat some spider mites, but they aren't really worth the money. Heck, they are barely worth the money when battling aphids.