They're about three years old. usually i just let them rinse over night in denture cleaner. I've noticed calcium build-up on them for most of that time and I figure that it's just a natural thing. However, recently, there have been some yellow spots on them and i can't get it off. i usually have them cleaned at the dentist, but they just rinse them off and scrub. how do you clean your retainers? what homemade or store bought solutions could i use to get them really clean and not so gross?
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