i can get as much odour kill as i want for free from the farms i work on, but i wouldn't use it for my dogs, even though i got if for nowt, its to strong in my opinion, its that strong it masks other bad smells that how it works, its industrial strength and super concentrated, its as strong as anything to us, and remember a dogs sense of smell is 1000 to 10,000 times better than ours depending on breed of dog,,,,,,, so be careful,