I am a return customer for this product (three times now!). It is amazing and cleans my carpet every single time leaving NO residue behind. I've used it for just a spray and in my steam cleaner and it seriously cannot be beat. None of my animals have reacted negatively to the product (two dogs and eight ferrets) though I'm sure not all animals are the same so it is better to be on the safe side and keep them separate from the area you are cleaning until it is dry if you are overly concerned. I recommend this product to everyone who asks!