If I get my toilet brush and scrub it underneath the rim where the water flushes out black deposits come out. What are is this deposit and what could I do to get rid of it. Thanks
274100cookie-checkBlack deposits under the toilet bowl rim
Chemistry in the real world
It’s biomass of some sort. Spray some oven cleaner on it, leave it for a few minutes, and then you’ll find the brush will easily remove it
It’s biomass of some sort. Spray some oven cleaner on it, leave it for a few minutes, and then you’ll find the brush will easily remove it