Purchased for my cat. It took 7 minutes to get it soft and squishy. The heat only lasted for 3-4 hours. Our cat is small and it wasn't comfortable for her to lay on. I would have returned it to the store but I threw the box it came in away.

I got one for a rescue kitten and it was working, but only stayed warm for about 4 hours. I've had it only a couple of weeks and now, (after 4min, then another 4, then 5minutes) it doesn't heat up at all! Bummer.

I received two of these for Christmas. I followed the directions to the letter. Although the product was warm the smell was horrible. Neither of my two dogs will go anywhere near them as they have a horrible chemical smell. Not only does the warmer smell but it transfers the smell to the pet blankets and bed. I had a "fun" night washing all that bedding! I let my neighbor borrow one for their dog and the same thing happened - smell repels dogs. I have the traditionsl plastic warming disks. These never smelled and have worked for years. These K&H warmers need to be reworked. I can't imagine how no one has smelled them before!

I microwave this in 3 minute intervals, up to 10, until all wax inside us melted. Roll it up in small cotton rug, under his favorite sweatshirt, ON his foam cushion. In a covered dry, windproof box on my covered lanai. Feral cat loves it. The wrapping of the heated pad makes it stay warm up to 12 hours. It was in the 30's F here in SW FL, but cat is just fine. I warm it up for him every night and he comes running