Backyard pest prevention starts now. Mosquitos breed in standing water, so be diligent about dumping rain and runoff from from pots, furniture, and birdbaths. Consider adding mosquito-repellant plants like citronella grass or marigolds to your flower beds. For the brave-hearted DIYer, try installing a handmade bat house. These gentle creatures eat swarms of bugs each night leaving your backyard much more comfortable.