In 2007, we had to face big challenges with these manifestations of a creative Nature.   We spent many thousands on facing the problem.  The product we were using at first was the permethrine, but the bugs are resistant. We hired another exterminator with a variety of products. We haven't had a case in a while now.  But to be honest, we can never take anything for granted.  In fact, they travel in the luggage so they could colonize the place again.  Because of that, we need you to be careful for us.  The whole experience has been very painful for us and we appreciate your understanding.