Late last year I bought this thing at Target on clearance for $5 called Kool Dogz. We finally had the opportunity to use it and the dogs love it! We have been freezing treats in this for them every day since it has been sooooooo hot! They stay outside in the morning and one of us comes home at lunch to let them cool off in the AC for 30 or 40 minutes and then they go back out with the Kool Dogz contraption. It has worked out well on all accounts! And they seem to share without fighting. Amazing!