We have been using these heat rocks for our sugar gliders for years and they work pretty well. The only problem I have seen from them is cleaning them is a bit of a pain since food particles do stick to them because of the material they are made from. They can be a bit difficult to clean if you let them sit to long with food particles on them. They heat up well, but one thing to keep in mind is that they do take some time to reach temperature. They slowly heat up so it can take several hours to get to the normal operating temperature. They will feel cold for a while and you might think they are not working, but within 3 hours or so they will be working great.
Rating:
[5 of 5 Stars!]