We enlist both Lab experts and consumer testers to assess how easy each cleaner is to use, how well it removes fresh and existing stains and how clean it leaves the bowl overall. When we test toilet bowl cleaners, we go right to the source - home and office toilets. In fact, we recently spent weeks testing 27 different toilet cleaning products to find which ones require minimal effort and yield maximum results.

We test hundreds of cleaning products each year to find the best for cleaning the bathroom. In the Good Housekeeping Institute Cleaning Lab, we know a lot about bathroom cleaning, including what ingredients dissolve the tough soils and stains most common on bathroom surfaces - like mold and mildew and hard water stains.