Tarantula Predator

Bought three sets of these in hopes of being able to control pm. Had a very very small amount of p.m. on two different plants in two different tents put these lights 16 inches above and have ran them at first 5 minutes at a time three times a week and now 7 days a week at 10 minutes and it has done nothing.

For some reason its my favorite light in my garden and I know why... I no longer need to spray!