[Hummingbird] Hummingbird exclusions for real estate

I have created a real estate website for my client. I would like to use Hummingbird to cache the pages that do not have active listings.

All active listings are in an "idx" subdirectory.

Here's an example url: http://maryelcanmay.com/idx/listings/belle-meade-west-meade-hillwood/

What do I put in the exclusions box to capture everything with IDX?