How do you prevent extra unpaid guests from staying?

[Jack90]

Hello Airbnb,

I manage a large holiday home in Gold Coast, Australia and a constant issue is extra unpaid guests staying. My default price is for 10 guests, with extra charges for each guest up until a total of 14. It's an issue for hosts, as I want to appeal to the market for 10 guests, and adjust my price to be fair to 12, 13, 14 etc as well. But often, guests who are booking for larger groups will skirt the system by only putting in confirmation for the lower amount of guests.

What are your methods of controlling extra guests? Do you write something in your house rules? Don't make the extra beds? 

Any tips and ideas would be great. 

[Jeremy100]

Why not charge for 14 and refund at the end of the stay if there are less people.

[Edwin57]

Will my place said three bedroom and holds 5 guest period that's all pulse my Dad greets guest in and guest out you have to take more responsibility of your own place other don't watch the way you would