Every day there are mouse droppings on my desk , very annoying , what liquid harmless to humans , but the fear of rats , mice painted on top let afraid to come . Mouse smell fear tulips , Netherlands Airport Hippocrates described as a rat infested , and the presence of rats , attracted a large number of birds come . These birds often hit the aircraft about to take off , and sometimes may even lead to very serious flight accidents . After expert studies , the Netherlands Persian airports around the airport decided to planting tulips. This is not in order to beautify the environment around airports , but there 's a lot to deal with rodents . As a result, the smell of tulips effectively prevents rodents around the airport into the airport. Dead rat smell. For example, you want to catch the mouse , you can put a dead rat in their haunt , later Guarantee mice never come.