BTW, I get my pads at Walmart. They are much cheaper than the pet supply stores and work just as well. I also bought the trays to hold the pads from Walmart as well. I have never noticed an odor from using the pads. My Gabi is only 2.5 lbs. so her she does not have a large volume to eliminate. I use 2 pads a day, 3 at most.