The Non-Casinos selector was added to the ChipGuide several months ago. On the left side of each page, in the MEMBER SERVICES column, is the NON-CASINO selector. It is a dropdown field that has the values:

ON - show Non-Casinos
OFF - don't show Non-Casinos
ONLY - only show Non-Casinos

The feature was added in for those who do not want to see certain non-casino establishments, like brothels and strip bars, on the ChipGuide.