@Gugumelo , a fellow grower has indicated one national product what is strememly efficient against insects…
u can spray it once in a week, and stop at least 2 weeks early harvest;
the name is Nexxor…
i did spray it once in the last 15 days on the leafs up and down side and spray on the grow walls, floor and indeed my office window. No more cockroach entering in the house and no insects or something like what i can see around my plants…
just dilute it more than the fabricant recommends because its really stronger, but efficient too.