The good thing is if it is not your place of business, you can tell the fake service dog owners anything you dang well please and not face any recriminations. My two favorites are "I truly hope your need to lie about your dog being a service dog will lead to you actually needing a real service dog in the future." Or, if you are only 99% sure, tell them. "Isn't it great that service dogs exist. I am so sorry you have the need for one. I am sure you agree with me that there is a special place in Hell for people who lie about having a service dog so they can take their mutt with them wherever they go. Have a blessed day."
The true victims of all the fake service dog scams are the actual people who need them. People have been so bombarded by the fakers that they automatically assume anyone with a dog in a place of business is gaming the system. These amazing dogs are truly doing God's work. It is truly sad that the lowest of the low have brought us all to the point that we assume nearly every service dog is a fake and the person with them is a lout.
