Febreze SMALL SPACES air freshener eliminates odors and prevents them from coming back for up to 45 days. Just push the button on the back once to activate it and enjoy up to 45 days of freshness. Air freshener works best in small spaces like bathrooms, closets and lobbies. It's great for putting next to trash cans, under sinks, and near toilets because it requires no plugs or batteries. The lush, tropical scent of Hawaiian Aloha helps make every day in your home smell a little bit like an odor-eliminating luau.