On Tuesday, June 1, 2021 at 7:54:51 AM UTC-5, TimR wrote:
About every two years my toilets start leaking into the bowl enough that they periodically refill. I guess my water is aggressive enough to eat away at them.

Last time I paid my plumber to do it instead of me, thinking he would have better quality parts. Nope, he went to Home Depot and bought the same stuff I did.

Is there anything better out there that will last a bit longer? Or is this just routine maintenance like filter changes.

I might've changed mine a couple times in thirty years or so. The fill valve wouldn't shut off. The incoming water
ran through the overfill tube.
There is this on Amazon. Who knows if it's any good.
https://www.amazon.com/Alternative-Flapper-Replacement-Next-Danco/dp/B08R8WGC7X/ref=sr_1_26?_encoding=UTF8&c=ts&dchild=1&keywords= Toilet+Flappers&qid=1622552722&s=kitchen-bath&sr=1-26&ts_id=3226965011