This product allows water/moisture to get into the seed hold (the plastic tube) I have to assume it's getting through where the wire runs through the top. This is the one most important aspect of a bird feeder. I have three of these and all three fail. This gets the feed wet and it sticks together and will eventually get moldy. So, this bird feeder although it looks nice and is of rather good quality, is useless because it doesn't keep the feed/seed dry.