Uhhm, I've been thinking if I should share this since it sounds weird but hey, I've seen weirder tips than these. :o) So, next time you ran out of toilet bowl cleaner (i.e. Lysol toilet bowl cleaner), pour 1/4 cup of mouthwash like Listerine into the bowl and let it stand for 30 minutes. Clean with a toilet brush and flush. Aside from leaving the toilet bowl sparkling clean, it will also disinfect and kill (hopefully LOL) the germs.