I have two guinea pigs that can smell up a room in less than an hour, no matter how much cage cleaning one does. I had a guest coming and, unfortunately, they were staying in the same room as the guineas. I sprayed all the linens in the room with this spray and was SHOCKED when the room had not a hint of guinea by the end of the day. In fact, 24 hours later the room still smelled cozy and delicious. In love with Olent's room sprays, and very impressed with the results when tackling a stubborn pet smell.