Thanks for the advice but the older chains work fine on old cassettes and for CX rides when they get waxed every one or two rides that’s a lot to replace for the few times they get used. My road equipment is new and gets well looked after.
Small containers, no mess?
There’s a difference between ‘working fine’ and ‘not grinding away components like a file’, but if you don’t ride the bikes much, or your cassette/chainrings are somehow cheaper than a chain, it might not make a massive difference 