Yep once a month in straight white vinegar overnight.

A teaspoon of bleach can be added to a water soak but
cannot be used if there are any metal components to the
denture or partial.

Good ole soap and water still works wonders, just be sure
to rinse off all of the soap before inserting into the mouth.

    There is no magic in Polydent, and it has no antimicrobial activity
that I know of.  So if you use the same container you'll just be
culturing bacteria and yeasts.  If you  like the minty taste, brush the
dentures wimild soap and soak them in a little mouthwash.  Occasional
soaking in vinegar will keep the tartar down.

Steve

Will one tablet dropped into water last more than overnight? I can't
find any references to how long that solution will last and remain
effective. Polident just say use it daily, no mention of using a new
tablet daily.

Thanks