So my plants are 3 weeks into flowering and I haven't noticed one catepillar. I got hit pretty bad last year.So I have both foliar spary and the dust form of BTK. This morning I sprayed the bottom leaves and dusted the base of the stock. Will this technique do the job?I would think Spraying or dusting the whole plant would ruin the plant. I dusted a plant last year and it never came off, although I know the chemical is only supposed to last a week or two. I ended up throwing away a lot of the buds. I think I'm just going to brush neem oil on the canopy leaves and dust and spray the first 6-12 inches of the plants.