A typical full-body scanner costs upward of $150,000, and critics maintain that for this high price-tag we get a detection system which is not fool-proof and which may be risky for our health; they point out that experience in IED diction in Iraq and Afghanistan shows that dogs are superior to scanners in detecting explosives — and that they are much cheaper ($8,500 for a dog plus training) and do not pose any health risk; some researchers say that mice and bees are even better bomb sniffers than dogs