Use a plastic/soft scourer with a half fill of water.
You shouldn't need to scrub the filter to get the sediment off, just a light brush.
Mine generally last years with the ceramic eventually wearing through from the light scrub. I'm only filtering rain water so I'm not concerned about removing fluoride.
I used one of those soft Scotchbrite dish scrubbers. The kind with the sponge on one side and the more stout bristly stuff on the other. I didn't scrub them very hard, just enough to get that crap off.
Yeah I'd probably look for a softer one. It just depends on how long you want your filters to last. I'm just taking sediment out, so I want them to last for as long as possible.
We have a dedicated scourer that doesn't get used for dishes (ideally you don't want detergents in contact with your filter candles).
Good to know! Thank you.
