You can use Cannacure, its a nice product, to prevent pests and so on. It contains Neemoil too, and some benefical additives. Its very economic and easy to use ( they say even to a flowering plant. ) You can grow "company plants" like marigold, geanieum, basil ( all stinky stufff) Ihave been using nictotine tsolutions, neemoil solutions, plants..................................................https://www.growbarato.net/en/canna/118-cannacure-spray-1l-plant-protector.html#/capacity-spray_750ml