Toilet bowl cleaner is a specialized cleaning product designed to remove stains, mineral deposits, and bacteria from the inside of a toilet. It typically comes in liquid or gel form and is applied directly to the toilet bowl. Many formulations contain ingredients like bleach or acids that help disinfect and whiten the porcelain surface. Using toilet bowl cleaner is straightforward. After applying the cleaner, it is usually recommended to let it sit for a few minutes to allow the active ingredients to work effectively. Then, scrubbing with a toilet brush helps to remove any remaining grime, leaving the toilet clean and fresh.