Dig up the area around the old sprinkler head that you want to replace, or around the irrigation supply line where you want to attach the sprinkler. Remove at least 12 inches of dirt from around the base of the attachment point so that your hand has room to work.
Unscrew the old sprinkler head counterclockwise. Pull the sprinkler off of the underground riser and discard it.
Wrap the exposed threads of the sprinkler riser with a single layer of Teflon tape. The tape will help make the connection watertight.
Place the bottom of the Raid Bird Sure-Pop sprinkler on the exposed riser.
Turn the new sprinkler clockwise until tight.
Replace the dirt around the base of the sprinkler.