I received this item approximately 10 days ago and am not at all happy with it. First of all the top that supposed to fit on it does not stay in place. It does not lock into place like it supposed to do. If you bump the can the top falls of. The sound it makes is so faint it does not bother my cats. The air sprayed out within 4 days and it was mostly when a person was near it and not the cats. I called the manufacturer thinking it was a defective top and they sent me another which does the same thing.Total waste of my good hard earned money.