I got rid of my expensive one and got an ikea one.
I high pressure cleaned the expensive one and sold it. Bought an ikea one and my sanity returned!
Ds1 used it until he was about 2 1/2 and then we put him in a booster at the table. Now ds1 uses it.
I've had no accidents but each kid is different.

DH, Me and our two boys.
#3 due 30th Sept