Nothing is sprayed on your beds, your vegetables, or the soil. It's a baited trap on a solar panel — hang it in the damp shade where they gather and it runs itself dusk to dawn. Empty the tray and top up the BioLure every couple of weeks. Cost effective, hangs in under two minutes, and backed by a real test: run it fourteen nights, and if your bites haven't dropped, send it back. Keep doing the dunks either way.