Review on Prodyne Wine Pourer Stopper Set by Francisco Holmes

Bought for my husband about a year ago. We liked the idea of having a pouring mechanism to keep the bottle drip-free. They fit well and don't spill, but the dispenser is easy to remove when you're done with the bottle. While I don't think this is a flaw in the product, we did notice a lot of buildup. in them and a little on plastic plugs. Does the wine leave behind such mineral residues? Well I've used everything to wash and clean the white deposits from the metal inside but nothing has worked so far. Maybe I'll just have to replace them because it's just a bit disgusting to see that crap in there. But my husband doesn't seem to mind. Bye!