I don't think it's necessary to treat your plants unless there is a pest problem. If you see mealies and you are afraid that they have started spreading then you could treat but there is no need to use an insecticide as a preventative, that's like taking antibiotics so you don't get an infection that, well that you don't have.
Keep your eyes open for those mealies and then take action if they return but for now I would just enjoy your plants.

Mike

After re-reading my post I can see I worded it incorrectly, sorry for that. I don't actually plan to use BATS until I see mealies on the compacta. From what I have read here, by the time you see them on this one, the infestation is pretty extensive and difficult to stop short of tossing the plant. I was not a Girl Scout but I do believe in being prepared just in case. I do not want to find a bunch of bugs and have to waste time researching what to do. I want to have what I might need available and the knowledge to use it appropriately.

I have been looking for a spray with pyrethrin in it to use initially. I finally found some today so I am glad to have it available.

Thanks for the response Mike.
Tami