Not likely. Raccoons have been known to have multiple dens sites in a residential area. They may leave temporarily but are sure to return, especially if one of their other den sites is disrupted or destroyed. The only way to ensure they are permanently excluded is to use humane removal techniques and to install professional raccoon proofing. In actuality, removing the raccoons properly will essentially teach them that it is an unsafe den site, whereas allowing raccoons to leave on their own will often have them trying to get back into the area at some time as they remember a suitable den site.