Makes sense, I'm indoor and my problem starts from my Veg room. I have a Thrip infestation on my moms, clones, and teens. I need to solve the issue there. If I solve it there, my main spot won't have an issue. I just need a legit game plan. I don't know what to do in my Veg to get rid of them.I spray the sevin every 3 weeks at 1/8 the concentration recommended starting at 4 weeks old. If I wait until I see critters here it's usually already a full blown infestation.