No need to line bins with bags anyway. It's not rocket science to clean it out. Quick squirt with something and a scrub out with a rag or paper towels, and the bin's clean.
I know, I know, I'm a housewife
We get free rolls of bio bags from the council to be used for disposing of food and garden waste. I'm still on the first roll 'cos I have three compost bins
and brandling worms digest just about anything organic
It's a pain in the neck standing outside in the wind trying to hand sort the litter into paper only, plastics, glass, compostable and anything left over, though. I don't know anyone who has room in their kitchen for four smaller bins. I manage with two under the sink and a bunker top stainless steel old coffee canister for the compost.
Certainly a huge reduction in carrier bags around up here.
M