User blog comment:TenshiAkari12/Well, this is embarrassing.../@comment-53539-20141012145031

An old trick that my dad used in the army was to put the for legs of the bed in water, with soap/washing up liquid in it. If you do it right, the bugs from the rest of the room can't get onto the bed (they normally use loose bed hanging over the bed or the legs to get on it).

It worked well when he was in the middle east when he was in the army and his entire troop ended up copying him. He got the idea out of a magazine, though the soap was his mother's idea from experience of dealing with another pest.