 But that doesn't mean they're completely safe or non-toxic. You need to read the label and use it correctly. And in most cases, that means removing your pet from the area while it's being sprayed, while it's still wet. If you're having a professional come and do it, you're probably going to make sure that your pet is removed and you let the area air out for anywhere from a couple hours to maybe 24, depending upon if you can still smell it or not. The pet we worry most about