Hi! Are you asking about AirBnB or VRBO? Also, have you done the API integration with either of them?
If AirBnB, and you do NOT have API, then take a look at you listing and click on Booking Settings at the top of the page. Scroll down to "How Guests Can Book" to change your settings.
BUT - if you're asking about AirBnB and you are API integrated, you can not turn off IB. However, you can change to their most restrictive setting which will eliminate a lot of folks. Go to Settings > Channels > API Integrations. Once you're in the AirBnB connection and click on change, the second line lets you pick your policy. It's not foolproof, but it definitely helps.
