SkeeterVac TacTrap Replacement increases the effectiveness of your SkeeterVac mosquito exterminator by collecting the biting mosquitoes into the trap they can than be easily emptied during regular maintenance of your unit. This item contains 2 TacTraps. Each trap will last up to 60 days. Fits all models of the SkeeterVac except model SV-1000. Replace when 80 to 90% covered with mosquitoes or other biting insects. The contrasting colors attract mosquitoes.