The proof's in the pawprints

时间:2019-03-06 09:06:04166网络整理admin

By Mark Robins UNSCRUPULOUS restaurateurs beware. Researchers studying social behaviour in mice and rats have come up with a way of detecting rodent infestations even when telltale droppings have been swept away. Minor infestations of mice are hard to detect, says Jane Hurst of the University of Liverpool. “You can look for signs such as gnawing or the sounds they make,