Karen B. London
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Trained dogs detect land mines, drugs, explosives, missing persons, cancer, and just about anything else that they are physically capable of smelling. Julia Kamysz Lane recently blogged about how dogs can even sniff out peanuts and cash-carrying criminals . JoAnna Lou clued us in to their use in locating illegal DVDs . Now, add bedbugs  to the list. There are dogs trained specifically to detect the scent of bedbugs.
The advantages of using dogs for this purpose are many. Dogs can find the bedbugs faster than people can. With proper training, they can distinguish between dead bedbugs, which may not require chemical treatment, and live bedbugs, which do. Dogs can pinpoint the source of the problem so that smaller areas require fumigation. For example, perhaps not all rooms in a hotel are infested, so dogs can make it cheaper to solve the problem, and result in fewer nasty chemicals being released into the environment.
This is another example of how dogs literally make our world a better place!