Are the heaters safe?

The SnugglePuppie and SnuggleKittie heaters are safe and non-toxic - the main reason why we chose these short term, disposable heaters rather than the other choices available to heat - like the gel warmers you put into the microwave - some gel warmers even have a disc that if a puppy where to chew, it could potentially cause damage to the throat...the heaters we sell are made from natural ingredients that when exposed to air heat up, and will heat for about 20 hours. Once finished heating, you throw them away with your regular trash. We also suggest dry rice in the microwave for short duration heat. We give you the rice pouch (not the rice though) and all the heating instructions. I hope this helps, let me know if I can explain more or answer any other question or concern - Julee