Yes, you can be as specific as you like with a custom jQuery selector. Do understand that the selector syntax is incredibly particular, so you have to be very careful in crafting it. You can break your site with bad selector syntax.
I’ll be glad to assist with crafting the selector if you can give me more specific information about your site and your needs. If you’d like to take the conversation to email instead of a public forum, my email address is at the bottom of each page of the Exit Notifier settings. Feel free to email me. I’ll close this thread with an explanation of the solution we come up with for you that’s anonymized.
Let me know how I can be of assistance!