Not sure this is helpful but I don’t use one, never have. Just take out the bin daily. Never found it to be an issue.
I don’t bother twisting it, and I buy the non branded refills. Nappy Bin Refill, Nappy Refill... https://www.amazon.co.uk/dp/B0DW8L527H?ref=ppx_pop_mob_ap_share
We just have a plastic bin and use nappy bags, chuck them in the bin and then empty that as and when x
I use the scented nappy nylons and just throw it in the bin the scent on the nylon protect the nappies from smelling so I just remove the nappy from baby bum , put in the in scented nappy nylon then throw it in the regular bin