Limiter: Create an Automatic Shut Off Limit
You can create an automatic shut-off limit by using the limiter for any Ethnio intercept or screener link so that after you get a certain number of responses, it will turn off. This is also commonly used as part of sending certain respondents to a 3rd Party URL. Whether you're using that or not, just roll over your screener name at the top of ethnio and select limiter:
Then you can set the exact details in this menu: