Our process uses warm air to kill all bed bugs and their eggs. The room and all its contents will be warmed to over 125°F (the kill zone) and may reach temperatures of 145°F (ensuring that all areas reach the kill zone). As a result anything that can be damaged by this heat should be removed. We have a check list which includes: candles, chocolates, pets, plants, medicines, and stringed musical instruments. Everything else should be situated so that the heat can penetrate as quickly as possible. Drawers should be opened, doors to closets opened, furniture moved away from walls, cushions lifted off of couches, mattresses angled up off of box springs, and clothes hung up or spread out so that they are no more than three inches deep. Full instructions are available here.