They die due to dehydration. They live on blood. Dead one are just flat. I have cought some and left in a sun in a cup. They died in a day or two. If they are

They die due to dehydration. They live on blood. Dead one are just flat. I have cought some and left in a sun in a cup. They died in a day or two. If they are not hungry, they will stay at one location. When they are hungry, they will travel. Typically they like to live near their food sources. In hotel, they are found in Mattress bedframe etc. High heat has high fan running too. As long as air reaches their, it will heat up. We had 100% success rate with heat as long as you setup properly