as a cable guy, i sometimes do not put the filter (trap) on the line. Sometimes it is just i dont have one in my truck at the time, or the weather sucks, and i dont want to climb the pole. The company I work for checks to see if I coded for it in my paperwork (most cable installers are piece work). If i didnt, and wont get paid for it, It usually ends up going back out to me or another tech. Sometimes I will return and do it within a couple weeks, but sometimes im sure i forget all together. Eventually, there will be an audit done on your street where someone will go up the pole or into the pedestal and verify that the "traps" are installed, and the worst that can happen, is they knock on your door and say "did you know you were getting these channels for free?". Then they will try to sell it to you. Dont worry, there is nothing they can do. Think of it like getting free gravy on your fries, they cant charge you for it once you started eating it. Good luck.