Also..its a bit strange but they run like cockroaches when they see you coming..sometimes you will plainly see a retarded one strolling around...just giving you a sign you got a thrip issue.
I been using pesticides off n on for years and hate it. I newly discovered a secret hemp farmers use. Its powdered sulfer. Its natural, its good for the plants, can use it with lights on or in sun and wont burn, its cheap, use half a dose as recommended so your plants dont look cloudy sheen on leaves, use it weekly as a maintenence. I habe not had a thrip problem since my newly discobered sulfer treatment. To be safe id use the spinisad bc it works. Then get some sulfer to uuse on a reg basis.