This recipe for an all natural toilet bowl cleaner came courtesy of www.ecoperth.on.ca.
Pour one cup of borax into the toliet at night. The next morning, brush and flush. Pour 1/2 cup of baking soda and 1/2 cup of vinegar into the bowl and brush clean and deodorize.
To spray in and around the toilet area to kill germs, make a disinfectant spray cleaner out of 1/4 cup borax, 1/8 cup vinegar and 2 cups of hot water.
I’ve not tried that although i know many people who have alsorts of ways of cleaning their toilet. I’d simply prefer to buy a new toilet every time instead of cleaning it!