The soy wax and 100% cotton wick are extremely clean-burning; each candle burns for about 60 hours. Promising review: &quot;I have multiple dogs in the house and am always concerned that it smells like that to visitors even cleaning everyday. I have used other candles add a pleasant smell to the underlying odor, but these do better. I can leave the house and when I first open the door on my return, I don't smell dog. We recently had a house full of people (many of them pet parents) over for dinner and someone actually commented: 'Your house smells really nice. How do you keep the dog smell out?' I laughed and told them I was just wondering if the candles were working. I guess I got the BEST answer.&quot; —LLL TexasGet it on Amazon for $21.95 (23 scents). Need more convincing? We know these actually work, because we've tried them! You can read one editor's full Pet House Candle review for more.