Blue toilet bowl tabs

Try these homemade toilet fizzies:

https://wellnessmama.com/23600/toilet-cleaning-fizzies/

Don't use those tank tabs. They will ruin the flusher ball (or whatever it's called)

just replace the cartridge with the tabs really

there was a feature today about home made cleaning solutions...like "toilet bombs"

Just use a cleanser and toilet brush a few times a week. Cheaper and less chemicals.

Clorox tablets.

Denture tablets work wonders in a toilet. If it's bad, use a couple and let them set overnight.

Scrubbing Bubbles toilet cleaning gel. Use the applicator to stick a "disc" of the gel to the toilet bowl just under the rim. It stays there and every flush runs water over it.