Ortho Home Defense Max Indoor Insect Barrier 9oz Create an indoor bug barrier against all common household insects with Ortho Home Defense Max Indoor Insect Barrier. Kills ants, cockroaches, spiders, fleas, ticks, scorpions, beetles, earwigs, silverfish, centipedes, millipedes, and other insects as listed. This fast-drying formula has no fumes and leaves no stains so you can use with confidence indoors. It spreads easily into cracks, crevices, under appliances, and into hard to reach places where insects hide.