Live waxworms are nutritionally superior to live mealworms, providing more calories, higher fat and calcium content and lower moisture than mealworms. Mealworms also have a tendency to move out of the feeder, while waxworms in the Grub Block stay put.

Grub Block contains approximately 100 prepupal waxworm larvae (caterpillars). Waxworms are creamy white, about 3/4" long and have a soft body that is easily digested by birds. The waxworms are neatly rolled into a corrugated cardboard block that can be easily inserted into any conventional suet feeder. Hang approximately 5 feet high or from a seed feeder in a visible spot.

If your Grub Block freezes during winter weather, birds still will find and eat the insects. Can be stored at room temperature for up to three weeks, but best if used immediately. Only available October-April.