Rodents Are Most Active in Winter
Posted on November 14, 2013
Winter is a busy season for pests. Rodents are most active and insects come in the house to find warmth for the cold months.
- Rodents are still coming in and are active. Listen for noise in the walls and look out for droppings or chewed food wrappers found in rooms where you didn’t leave food.
- Areas most likely to have mice are the kitchen, basement near the furnace or the garage, where they can stay warm.
- A mouse only weighs about one ounce so it loses its body heat fast. Because the furnace and the kitchen are often only a few feet apart, it’s easy for a mouse, with it’s short range of about 10 feet, to grab food in the kitchen and go scurry back near the furnace.
- Insects that were coming into your home will have already found their way in and wait out the winter season inside your home (over winter).
Mouse – Mus Musculus (House Mouse)
MouseBelongs to one of numerous species of rodents. The best known mouse species is the common house mouse (Mus musculus). The American white-footed mouse (Peromyscus leucopus) and the deer mouse (Peromyscus maniculatus) also sometimes live in houses.Mice are very harmful pests, damaging and eating crops and spreading diseases through their parasites and feces. In western North America, breathing dust that has come in contact with mouse feces has been linked to the deadly hantavirus. The original motivation for the domestication of cats is thought to have been for their predation of mice and their relatives, the rats.
Norway Rat – Rattus Norvegicus Norway RatThe Norway, or brown, rat lives both as a commensal in close association with man and in the feral state. As a commensal this rat lives principally in basements, on the ground floor, or in burrows under sidewalks or outbuildings. Although more at home on the ground, these rats are adept at climbing and have been observed traveling along telephone wires from one building to another. In places they become exceedingly numerous and destructive.They constitute a menace to public health. They are known to be reservoirs of bubonic plague (transmitted to man by the bite of a flea or other insects), endemic typhus fever, ratbite fever, and a few other dreaded diseases. Because of this it is commonly said that Norway and roof rats are more dangerous than lions or tigers! Every effort should be made to exterminate them when they are found on your premises, and it is advisable to ratproof garbage cans and all buildings to prevent their entrance.Water doesn’t stop Norway rats. They can swim as far as 1/2 mile in open water, dive through water plumbing traps and travel in sewer lines, even against strong water currents. Rats are capable swimmers but only swim if necessary.Rats constantly gnaw anything softer than their teeth, including lead sheeting, improperly-cured concrete, sun-dried adobe brick, cinder block, wood and aluminum sheeting.Since rats can fit through openings that are as small as 1/2 inch in diameter, it’s very difficult to rat-proof a building. They can burrow to a depth of four feet.Young Norway and roof rats can be sexually mature and capable of mating at 3 months of age.Female Norway rats can be pregnant with a new litter and still lactate to feed their young. However, the gestation period may be slightly longer. After giving birth, they are capable of being in heat again in 24 to 48 hours. They are in heat approximately every 4 to 5 days. They average 3 to 7 litters per year. Norway rats usually have larger litters, 6 to 12 pups. Droppings average 3/4 inch in length and are blunt at both ends. Average 30 to 180 droppings a day.