Rats and mice are both extremely destructive within agricultural communities. A number of species feed on seeds and grains. The feces and urine of some rodents may contaminate surfaces with which they come into contact.Rats can harbor and transmit a number of serious diseases. They can also introduce disease-carrying parasites such as fleas, lice and ticks into your home.Rats are instinctively wary of rat control measures such as traps and bait, and colonize in attics, burrows, under concrete and porches, in wall voids and other hard to reach places.Keep any possible food sources away from rodents. Small crumbs and garbage are popular sources of infestation, as are dry goods such as grains and cereals. These should be kept in sealed metal or glass containers to prevent contamination. Fruits and vegetables should also be stored properly and resulting waste should never be left in sinks or on counters. Cardboard objects prove attractive to rodents, as they tend to chew them up for use in their nests.