also, if you see any TPC mines that are planted on a wall or something, you can shoot them and make them explode so that you can safely past. its not like omg theres tpc mines, i cant go this way now. that would be silly
I have a few tips for the TPC Launcher secondary mode:
-Try to put the mines on walls of corridor as they make a corner. The corridors destination should be a place where a there is only one or two entrances or exits. An ideal example would be the roofs where the flags spawn on in Cash Site. -Another tip would be to put the mines over on the top part of a door frame, so when they walk in, they don't notice the mines, and they go BOOM!!! I used this to some success in Precipice. -You can also place your mines on your teammates.
I've seem to remember that the TPC mines seem to work well on the bridges on the blue side of Agatha.