I’ve had 2 PortionPro Rx for close to a year now and they are fantastic. I will never go back to using regular food bowls for my cats again. I have 2 cats, 15 & 2 years old. The older cat needed a higher calorie food to keep weight on and the younger one needs a much lower calorie food, she was getting pretty tubby. My vet recommended these feeders to keep meals separate and they have worked as promised. They thought of everything! Fat kitten can no longer steal my seniors food and has lost some weight, and my old guy has put some on. I also got a third tag for my dogs collar so she can’t steal cat food either, for the first time in years I no longer have cats eating their food from the tabletops. Very simple to program, durable, easy to clean and maintain. The cost is well worth the peace of mind they provide to me. Buy this product!