Blocking Channels on the DirecTV app (Parental Controls) - DirecTV

I am trying to block certain unrated programs on the DirecTV app; e.g., infomercials with titles such as "More S*x, Less Stress". But the channels carrying these infomercials (e.g., 77, 95, 225, etc.) are not in the list of channels that can be blocked. How can I block these programs and/or channels?

This question, "Blocking Channels on the DirecTV app (Parental Controls)," is about DirecTV channels, programming, equipment, and sports.