Cleaning Many toilet bowl cleaners contain acids and other chemicals that are harmful. Use the mildest product you can find, and always wear gloves and goggles to protect yourself. Most non-acid toilet cleaners are relatively safe to use, and have only a small impact on the environment.
Disinfectants require a bit more care, but are still fairly safe.
Acid cleaners are the most dangerous of all. Use a mild cleaner for daily toilet polishing. Unless the toilets are already in good shape, clean them first and then use a separate disinfectant. Use acid cleaners only when you have really stubborn stains to remove. Acid cleaners are very dangerous - always protect yourself by wearing gloves and goggles.