Cirkill RTU is a ready-to-use formula that is designed for spot treatment, quick contact kill, and in situations where quick dry times and residual kill of eggs and adults is required. Cirkill is proven to be 100% effective against pyrethroid resistant bugs and it works quickly to kill bed bug adults and nymphs. Total kill of adults and nymphs can be achieved within 24 hours of application and the residual control can be effective for up to two weeks after application. The bed bug eggs are kill whether they are treated directly or if they are exposed to residual treatment on surfaces. The treated surfaces will continue to kill eggs, whether they are laid before or after treatment, for up to three weeks. Cirkill is a plant-based residual insecticide and ovacide that has a very low toxicity. The active ingredient, cold pressed neem oil, occurs naturally in the environment and the EPA has determined that it causes no toxicological, ecological, or environmental concern. Cirkill has a unique botanical smell that assures you that the product is working. The smell can linger and the product is not recommended for use in areas where the scent could be an issue.