I love love love my Kaboom. I get refills at Home Depot, but the boxes the refills come in always have coupons too. I use to have to clean my toilet constantly, but with this, I change it every couple of months, and thats it. With two of us in the house, I'm sure we don't go through it as fast as some of you with larger families, but, believe me, whether or not your get credit, the product itself is well worth buying.