Get this Great Stuff Pestblock with Smart Dispenser for delivery. New Quick Stop straw technology – helps stop messy foam drips. Forms a barrier, blocking ants, roaches, spiders, bees and other pests. Seals entry points airtight, keeping pests outside the home, where they belong. Contains no pesticides. Great Stuff foam with Quick Stop applicator will seal shut if left to sit for more than 2 hours after its last use.