The D room in Motel can be very annoying for T's because there are always D's and Inno's camping there. For a T it is common to place a C4 but there is always so many people camping in or near the D room so they almost always hear it and it is a waste of a credit. So I believe it is fair to add a single use T trap that blows up the D room for one credit cost just like the tester in Nether. I'm tired of it and want to hear what other players think.
