I find kongs a real pain - stuffing them and cleaning them. Particularly with the bone-shaped ones I end up with wet food everywhere when I am filling them. Is there some trick that I'm missing?! I seem to make very heavy weather out of what must surely be quite straightforward!
We use liquid for Maxx's Kong's. We either cook up a big batch of carrots with a bit of honey in the water, put them in a blender with some of the cooking water and then pour the liquid into empty plastic bottles and have one bottle going in the fridge and the rest in the freezer. We put some peanut butter on the little hole in the Kong, freeze that then pour the cooled carrot juice into the Kong and freeze. No mess! Well, if they tip over in the freezer it goes everywhere but I put them in the door of the freezer, propped up by other frozen goods.
Another version is banana and water in the blender and, for times when we are going out, we cook a bit of chicken, put that and the cooking liquid into the blender for an extra special one.
We would go stark staring mad every day without Kongs. Maxx is very demanding of our attention and has the loudest bark I've ever heard. My husband has a crook ear and he can't stand the barking. A quick Kong out of the freezer and voila! Low calorie too.