I agree with Sheryl. I use alcohol on a Qtip for rare scale problems but that's about it.
BATS should work in your situation and only needs to be applied once a year. In the Fall before the plants come inside is best in case they are harboring any unwanted hitchhiking bugs. Be sure to be careful of the dilution:
1 ounce per gallon (or two tablespoons per gallon).
BATS has a fertilizer now. Well, most of the Bayer products do. So no need for extra fertilizer for cacti. The insecticidal ingredient is called Imidacloprid and can be purchased separately, if desired. That's if you don't want the fertilizer component in the BATS.
