Abstract: A pesticide injection system for exterminating insects is provided. The pesticide injection system comprises an applicator and a plug frictionally engagable with a wall. The applicator includes a pliable bottle for receiving a powder pesticide and a nozzle for injecting a powder pesticide into a blind space behind a wall suspected of harboring insects without the powder pesticide contacting the insulation. The plug has a check valve to prevent back flow and a door with a door seal to prevent the powder pesticide from spilling into a living space during use. The nozzle has a sleeve biased in a closed position by a sleeve spring for cooperatively exposing a port on the nozzle with an interlocking collar for rotatably engaging a guide on the collar and a tang on the nozzle with a flange on the plug.

Abstract: A pesticide injection system for exterminating insects is provided. The pesticide injection system comprises an applicator; an insert and a plug frictionally engagable with a wall. The applicator includes a pliable bottle for receiving a powder pesticide and a nozzle with an end cap for displacing insulation so the powder pesticide can be injected onto a blind space behind a wall suspected of harboring insects without the powder pesticide contacting the insulation. The means for sealing the nozzle to prevent the powder pesticide from spilling into a living space during use is one of an “O” ring and a ribbed seal. The insert has a plurality of fins engaging a locking tab on the plug. The means for preventing back flow is a check valve. The means for selectively covering a first end of a tube on the plug is one of a door and a cap.