Inside, the Rat commonly nest on the lower levels, but if the population is too large, they may be found in the attic and ceiling areas. Their nests are built from soft material like paper or grass chewed into small pieces. Rats will climb if necessary to enter a building. The rat is an excellent swimmer. Rats are suspicious of changes in the environment or new foods and for this reason it may take a couple of days for traps or poison baits to take. Rats are nocturnal, with their peak activity at dusk or before dawn. When the population is large or they are disturbed or hungry, you can see activity during the day. Mice
MICE: General Facts The House Mouse is the most common to invade our homes and buildings. Body length can range anywhere from 21/2 to 4 inches; body weight is less than one ounce, and average life expectancy is up to one year. Mice prefer to eat grains, but will eat anything man eats. Mice can enter structures through openings as small as a pen lid. MICE: Breeding Facts Adult females go into heat every 4-5 days. Gestation is 21 days. A litter size averages 5-6 with up to eight litters per year. After giving birth, the female can be in heat within 24-48 hours. The young mouse is sexually mature as early as five weeks of age
Haemorrhagic Fever with Renal Syndrome
The virus is spread by: Breathing in dust that is contaminated with rodent urine or droppings
Direct contact with rodents or their urine and droppings
Bite wounds, although this does not happen frequently
The disease may spread through direct contact from person to person, but it is extremely rare
Leptospirosis
The virus is spread by: Eating food or drinking water contaminated with urine from infected animals
Contact through the skin or mucous membranes (such as inside the nose) with water or soil that is contaminated with the urine from infected animals
Lymphocytic Choriomeningitis (LCM)
The virus is spread by:
Breathing in dust that is contaminated with rodent urine or droppings
Direct contact with rodents or their urine and droppings
Bite wounds, although this does not happen frequently
Rat-Bite Fever
The virus is spread by:
Bite or scratch wound from an infected rodent, or contact with a dead rodent
Eating or drinking food or water that is contaminated by rat faeces.
Salmonellosis
The virus is spread by: Eating or drinking food or water that is contaminated by rat faeces
Tularaemia
The bacteria is spread by:
Handling infected animal carcasses
Being bitten by an infected tick, deerfly or other insect
Eating or drinking contaminated food or water
Breathing in the bacteria, F. tularensis