Attract Squirrels Quickly: The squirrel feeders for outside tree will quickly catch squirrels’ eyes. The transparent acrylic makes it easy for the squirrel to see the food, such as peanuts, nuts, chestnuts and you will see the squirrels eagerly gnawing on food in your garden. The roof is designed to be flexible to pour food in, and also makes it easy for the squirrel to push up for easy access to nuts