I first stumbled on to this product when it was in a magazine article years ago. I couldn't believe the genius behind the product and what a great demand they would have once they launched their product nationally. Well I bought one of the first models and have continued to praised the day I decided to invest in this. I have two cats over 10 years old; they took to the CatGenie like it was the best thing since sliced bread. I have now replaced my older unit with the 120 and I know the products offered by CatGenie will continue to improve with good customer feedback. My only issue is accessibility outside this site. It would be great if I could run by a Target/Wal-Mart or similar retail stores and pick up supplies. Other than that, this is as good as gold.