We LOVE the Squirrel Feeder. I attached it to a tree and filled it up. Within a few hours, several squirrels had found the feeder. It took a while for them to figure out how to open the lid and get the food, but once they did they loved it. Once the food gets to a low enough level, the squirrels have figured out that they can just climb inside and chow down. Birds can't get into the feeder, but if the squirrels leave left overs on the ledge, the birds will drop by for a bite - which I like to see! Overall, this is a high quality product that works well and is highly enjoyable!