Mice

• A female house mouse gives birth to a litter of approximately six mice about 19 days after mating and is capable of mating again in two days.
  
• Can produce six to 10 litters a year.
  
• Are able to mate two months after birth.
  
• Can produce 2,500 heirs in six months, with ideal conditions and no mortality.
  
• Establish a nesting site near sources of food and feed 15 to 20 times a day.

Rats

• Various species are problematic in the U.S., mainly the Norway rat and roof rat.
  Bite more than 45,000 people each year, according to the U.S. Centers for Disease Control.
  
• Can burrow three feet straight into the ground, chew through building materials such as glass, cinderblock, wire, aluminum and lead, and can climb inside pipes with diameters between one-half and four inches.
  
• Primarily rely on smell, taste, touch and hearing.
  
• Eat and urinate on human and animal food.
  
• Support many ectoparasites.
  
  
  information obtained from www.pestworld.com