[cypher]

Providing the hamster that's used them before didn't have any illness that could be passed on I reuse things like wooden toys, coconuts & things made from natural materials, wheels or houses that may have been peed on I tend not to use but anything else I just air out & I've never had any problems.
I never use vinegar but do sometimes give things a soak in safe 4 disinfectant then just make sure they dry completely, usually on a radiator or leave them on my airer for however long it takes.