my thoughts on hardcore sprays:
- use only on mother plants and vegetating plants not in flowering.
- use a respiratory mask or filter at least rated for organic vapors.
- use goggles.
- wear long sleeved shirts and full coverage clothing.
- wear rubber gloves.
- read the instructions, pay attention to the reentry time. this means go do something for a few hours, away from the sprayed areas. (this is more of an issue where there is artificial air circulation, meaning the spray is constantly being moved around in the air.)
this is the procedure i follow when i use spinosad/conserve (for thrips)