1_Patriotic_Gal wrote:

My pet spent the week with a relatives dog and came back with a new learned
bad habit, drinking from the toilet -- If I leave the lid down a black mold
starts growing within a day or two and rapidly spreads - Even with the lid
open, without a toilet cleaner hanging, the mold grows -- It is definately
mold as it grows and grows! -- I have tried Lysol brand clip on toilet bowl
hangars but with the lid closed they are only effective for a few days. My
spouse doesn't like the smell of the hangar with the lid open and is
paranoid they will kill the cat if he drinks from the toilet with the lysol
brand Cling toilet cleaner hanger. So what are my options? Certainly
others have pets who drink from the toilet.

If I put nothing in the toilet, mold will grow, lid up or down. I also
don't want to eat away at the rubber tank flapper which I was frequently
replacing when I put cleaners in the tank; which is why we switched to a
bowl hangar. I have used a weekly cup of bleach in the bowl to kill
existing mold when it was an unbeatable problem when we first moved in -- I
would hope there is a more reasonable answer than doing this weekly to both
toilets. We are on city water.

Thanks in advance.
Andy

I'm surprised a 22 pounder can heft himself in there. g

Yes, chemicals will eat the rubber flappers. Replace the
flapper with the newer "red rubber" parts; these have very long life
in harsh environment. Add bleach to the tank water periodically;
it will be dilute enough not to harm the cat.

Jim