DE will not work, bedbugs enter your unit through any crack/crevice available through other units that are infested.they can lie dormant for upto a year waiting for a viable host.all they need to do is feed once and they can live on for another year. In the organization I work for,we are no longer able to sit or lean against walls in patients homes,if we do, and we get bedbugs in our home we are liable for the expense of getting rid of them. Here's the good news..bedbugs likely would not reside for very long on the ttc. you would be most at risk for having one crawl on you from someone sitting next to you,or one that has fallen off them. Bedbugs are notorious for living in people's clothing,they get into every nook and cranny they can to hide.they hide during the day,and are active at night. if you see them during the day in your unit,there's a large number in the building, I know buildings where there is a low level of infestation all the times. Gym is not a risk unless you have sat on the same spot where a bedbug just fell off someone,and it attaches to you. I know for a fact that certain mental health agencies downtown are infested and the workers have to change clothes when they come in and when they leave.Heres' what scared the hell outta me. A pest control worker said that bedbugs are such a problem now,that let's say you own a house and a squirrel gets into your attic.Bedbugs will live on mammals for short periods,and if they are attached to a squirrel or any other mammal that has been in a bedbug infested area.They will/can fall of that animal into your attic and well,now you have bedbugs. bedbugs historically lived on bats in caves.so, I can see how this could happen. It's going to get worse before it gets better.
DE does destroy there exoskeletons,but, it takes many contacts with the DE to kill them,and by then they've reproduced.