Snares are one of the simplest traps and are very effective. They are cheap to produce and easy to set in large numbers. A snare traps an animal around the neck or the body; a snare consists of a noose made usually by wire or a strong string. Snares are widely criticised by animal welfare groups for their cruelty. UK users of snares accept that over 40% of animals caught in some environments will be non-target animals, although non-target captures range from 21% to 69% depending on the environment. In the USA, non-target catches reported by users of snares in Michigan were 17 +/- 3%.