Facts About Norway Rats in Rohnert Park, CA; Rat Droppings, Diseases, Burrows & More

It’s very important to control Norway rats in your home and yard because they can cause damage to your property and they pose a serious health risk to your family with the bacteria and diseases they can spread.

Norway Rat Identification

The head and body of a Norway rat is about 7 to 9 inches in length with a tail that is 6 to 8 inches long. Their tail is sparsely haired and they have coarse, shaggy fur that is dark brown to black in color with a belly that is lighter. Norway rats have small eyes and a blunt nose will small ears that are close set. Norway rats love to live around people because it’s easy for them to get food that way and they aren’t picky either. They’ll eat almost anything they can get a hold of but prefer grains, meats and fish, nuts and some fruit. Norway rats reproduce like nobody’s business! The average female Norway Rat gives birth to 4 to 6 litters each year and these litters can include 6 to 12 young. They can and will reproduce only a day after a litter is born and because they are only pregnant for 21 to 23 days, an infestation can get out of control quickly.

Signs of Norway Rats

You need to look for signs that rodents are hanging around your property. If you can figure out where higher populations are present, then you can take extra steps in those areas to prevent problems in the future.
Droppings– The droppings of Norway rats are ¼ to ½ inch in length and shaped like a capsule with ends that are blunt. They are shiny black and can vary depending on what they’re eating. Rat droppings are three times as large as mouse droppings.
Gnawing holes– The gnawing holes left behind by rats are about two inches in diameter and the edges will be rough. They would rather gnaw on wood but will also gnaw on food packaging and electrical wires.
Rat tracks– Tracks left behind outside your home will be smooth and packed. Inside your home you will find them in through areas that are dusty or dirty. Rats also drag their tails, so you’ll see a line between the tracks of their feet. Rodents also have grease on their fur and you might notice marks from it in your walls
Rat urine stains & odors– As rodents run along they are constantly depositing urine as they go. This will look like a fine line if you shine a UV flashlight over the runway.
Sight and sounds– Rodents are nocturnal so if you see them during the day you may have a bigger problem on your hands. Other reasons you might see them during the day are a disturbed nest or a lack of food. The sounds that rodents make include scratching, gnawing and digging.
Rat burrows– The burrows that rats create are about three inches in diameter and are usually found next to walls, close to foundations and under debris.

Rodent Control

The best way to control any rodents is to first determine which rodent you’re dealing with. Rodent control is like sports in that if you know what you’re up against, then you’ll have a better defense. Contact the professionals at Hydrex Pest Control of the North Bay for the best solution to any rodent problem.


Hydrex Pest Control of the North Bay Inc.
4685 Scotts Valley Rd.
Lakeport, CA 95453
(800) 760-3028

Hydrex Pest Control of the North Bay Inc.
1120 Industrial Ave
#18 Petaluma, CA 94952
(707) 795-6345


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