A to Z Index

Mice

Description

The average adult mouse (mus musculus) weighs approximately 15 g and is approximately 15 cm long form head to tail.  Unfortunately, often the first clear evidence of rodent activity is the discovery of partially eaten, spilled or hoarded food, damaged packaging or other signs of recent gnawing.  Electrical cables, plastic piping, pipe insulation and wooden structures are all common sites of gnawing damage.

Biology and Habitat

The life cycle of the house mouse is very similar to that of the rat.   The gestation period is about 17 - 20 days, with a weaning period of about three weeks, living on average nine to twelve months.  They reach sexual maturity at about two months.  The average litter size is between five and six, with anything between five and ten litters a year.

Importance

Salmonellosis, caused by the bacteria of the Salmonella group ranks as one of the most widespread of animal borne diseases.  Infection occurs from the contamination of food and/or drink with rodent excreta.  Parasites carried and transmitted by rodents include ringworm, mites, tapeworms, ticks and fleas.

Control

It is important that when dealing with an infestation of mice that the pest control officer carries out a thorough survey.  Sightings of mice or their droppings (which are about 3 - 7 mm in length), smell, runs, smears etc. should be noted/recorded when dealing with an infestation of mice.

The Pest Control service has a range of rodenticides at its disposal and the conventional mousetrap.

Safety

All pesticides used by Bath & North East Somerset Council are approved substances under the Control of Pesticides Regulations 1986 and are fully risk assessed.