How long are your meet and greets usually? Perhaps spending more time in your meet and greets could help. I have had a handful of dogs who are unruly in my eight years of doing this. I spend about a half hour with the potential client, then I ask them to go outside for a while and see how the dog reacts. if I am unsure after that, I will take them for a short walk. Spending more time upfront, can possibly save you from some of the issues you are experiencing. If you are doing this already, then making them a one time client is your next step.

Also charge for the value that you provide. If you are training charge for that. There is a cost adjustment area and I have additional services listed that Rover doesn't have. Such as a dog park visit and so on. If you get a client who at first appears not to need training. Charge regular prices. If you find you are training more than walking, then go to your client and say I'm sorry I can not provide the service we previously booked, here is a service I think your pup would do better with. If your uncomfortable with changing, another sitter may be a better fit for you.

So many people own dogs, don't hang onto a client who causes more stress than it is worth. Hope this helps!