In Texas there are two different signs that restrict a concealed handgun license holder from carrying into a place of business. They are a 30.06 sign, and a 51% sign.

A 30.06 sign is a sign that a business owner can post to restrict a CHL holder from entering the business with a concealed handgun. An example of a valid 30.06 sign can be found here. The sign must read exactly those words in both English and Spanish, be placed in an area visible to the public, and have 1" lettering or it will not be considered a legally-binding 30.06 sign. "Ghostbuster" signs, or signs with a red slash through a gun, are not considered valid 30.06 postings.

A 51% sign is a sign that a business is required by law to post if 51% of their revenue is obtained through on-premises drinking, such as at a bar. Unfortunately this also has the consequence of not allowing CHL holders to enter the premises where the drinking is taking place while carrying their handgun.

Additional places are not required to post a sign to forbid CHL holders from entering the premises with their handgun as Texas law already forbids it, such as court houses and educational institutions.