The Pupsicle unscrews in the middle, making it super easy to fill, clean, and use as a dog distraction. Because it opens in the middle, you can fill it with extremely long-lasting treats or even pre-freeze treats to use later when you need them! Simply open your Pupsicle, place a pop inside, and then screw the two hales of the toy back together. Make sure not to over tighten when screwing it closed!