No pesticides. Works from spring to fall. Lures all major yellow jacket species. Lasts for weeks without daily maintenance. Catches queens and workers, spring to fall. Attractant included. Low maintenance. No messy clean-up. Won't trap beneficial honeybees. Catches queens in spring & workers from summer to fall. Formulated to attract all major yellow jacket species. Attractant lasts for weeks. Double-chambered design prevents escape. Durable construction holds up for seasons. 10-Week attractant cartridge available. Used by major US parks, zoos, resorts, campgrounds & school districts. Made in USA.