Hydrogen peroxide against a thrips infestation

Use BTS or mosquito dunks "bacteria that kill them" or nematodes "microscopic parasitic worms that kill them". it will kill the larva and leave everything else in tack, Peroxide will kill off baby roots, larva and beneficial bacteria leaving the environment open for pathogenic ones to take hold. The larva fall to the ground to pupate and that's when these items can get to work. You will also need to topically treat the plant to kill the adults as well as the young. hard spray of water out side to knock em off and some soap and water to kill the rest. give it a good rinse and move back inside with some sticky traps. Good Luck!