Eliminates most household odors by neutralizing the odor molecules, not just covering them up. In institutional use, Odors Away has proven effective in controlling persistent problem odors for up to 24 hours in an average size room. Squeeze to release liquid onto a glass or ceramic object. A few drops will control odors for 24 hours in an average siz room. If the odor source cannot be removed or is recurring, continued applications will be required.