The sprays are designed to drive rodents from the locations where they have created their homes. They are said to be quite effective in outdoor surroundings. This method of driving away rats is commonly more secure compared to other ways of pest management like traps, poisons, zappers, etc. The spray repellents do not kill the mice but are intended to drive them out from the houses. Nevertheless, the drawback to these repellents is the fact that, since, they do not eliminate the mice and are only effective in the immediate vicinity, mice contamination might persist or proceed to one more area closer to home.