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Norway rats are some of the larger rodents weighing more than 500 grams and measuring up to 40cm with the tails taking 21 cm of the measurement. They have shaggy fur covering their bodies and it can be gray or brown in color. The tails and ears have scales covering them and they have droppings that are capsule shaped. These rats can be damaging to structures because they east and gnaw on them and they are also dangerous to health because they cause rat bite fever, trichinosis, cowpox virus, jaundice, salmonellosis and plague. They easily contaminate food and bring fleas into your home.


Norway rats have a tendency of building underground nests in form of burrows and they are the same they use in entering buildings looking for food. They can survive in structures but also in farmlands and fields. They frequently burrow in sold near garbage, woodpiles, under concrete slabs and near riverbanks. Indoors they will make undisturbed material, basements and debris piles their nests and they can access your home though tiny holes or cracks.

These rats feed on various sources of food because they are omnivorous. They love nuts, grains, fruits and meat but they can feed on dead animals too; they can actually catch other rodents and fish for food. They depend on water which is why they love making colonies near water sources.

Identifying an infestation

Norway rats remain hidden most of the times and you rarely notice them unless you drive them out from their hiding areas. If at all you sight a rat during daytime, then it only means that you have a large infestation. Burrows are of course the most obvious sign of Norway rats outside. Gnaw marks on objects and food indoors as well as grease stains or rub marks are signs of an infestation. The darker the stains your spot the greater the activity and larger the infestation could be. Droppings are also obvious and usually are scattered on pathways frequently used by the rats.

Preventing an infestation

Food, shelter and water are the factors that will attract Norway rats to your home or property. To prevent infestations therefore, you need to find ways of eliminating these survival factors. Make sure your garbage cans have lids and are regularly emptied and seal you food including pet food in containers to reduce food sources around your home.

When it comes to reducing water sources, have all leaking pipes fixed, get rid of containers that retain water outdoors and ensure that your sprinklers and spigots to not drip. To eliminate shelter for the rats, maintain your landscaping and lawns and remove any wood piles you might have on the property. Find a better storage for your firewood so you do not end up creating nesting grounds for the Norway rats on your property.

Sealing up your home is a very good control measure to limit access into your home. Make sure all cracks and crevices are well sealed as well as any gaps there could be on your chimneys, windows and doors.

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Norway Rats And How To Prevent Infestations

Miami-Dade County: Aventura, Bal Harbour Village, Bay Harbor Islands, Biscayne Park , Coral Gables, Cutler Bay, Doral, El Portal, Florida City, Golden Beach, Hialeah, Hialeah Gardens, Homestead, Indian Creek Village, Islandia, Key Biscayne Village, Medley, Miami City, Miami Beach, Miami Gardens, Miami Shores Village, Miami Springs, North Bay Village, North Miami, North Miami Beach, Opa-Locka, Palmetto Bay Village, Pinecrest , South Miami, Sunny Isles Beach, Surfside, Sweetwater, Virginia Gardens and West Miami.

Broward County: Coconut Creek, Cooper City, Coral Springs, Dania Beach, Davie, Deerfield Beach, Fort Lauderdale, Hallandale Beach, Hillsboro Beach, Hollywood Florida, Lauderhill, Lauderdale Lakes, Lauderdale by the Sea, Lazy Lake, Lighthouse Point, Margate, Miramar, North Lauderdale, Oakland Park, Parkland, Pembroke Pines, Plantation, Pompano Beach, Sea Ranch Lakes, Southwest Ranches, Sunrise, Tamarac, West Park, Weston and Wilton Manors .

Palm Beach County: West Palm Beach , Boca Raton , Boynton Beach , Delray Beach , Greenacres , Jupiter , Lake Worth , Palm Beach Gardens , Royal Palm Beach and Wellington .

Monroe County: Key Largo , Islamorada , Marathon and Key West.

Ants: Acrobat Ant, Allegheny Mound Ant, Argentine Ant, Big-headed Ant, Carpenter Ant, Citronella Ant, Crazy Ant, Field Ant, Fire Ant, Ghost Ant, Harvester Ant, Little Black Ant, Moisture Ant, Odorous House Ant, Pavement Ant, Pharaoh Ant, Texas Leaf Cutter Ant, Thief Ant, Velvety Tree Ant and White-footed Ant.

Bitings Insects: Bed Bugs, Bird Lice, Cat Flea, House Mosquito, Human Head Lice, Kissing Bug, Pubic Lice and Thrips

Mosquitoes: Asian Tiger Mosquito, Aedes-Aegypti Mosquito and Culex Mosquito.

Cockroaches: American Cockroach, Asian Cockroach, Australian Cockroach, Brown Banded Cockroach, Cuban Cockroach, Florida Woods Cockroach, German Cockroach, Oriental Cockroach, Smoky Brown Cockroach, Surinam Cockroach and Woods Cockroach.

Flies: Blow Fly and Bottle Fly, Cluster Fly, Crane Fly, Face Fly, Flesh Fly, Fruit Fly, Fungus Gnat, House Fly, Drain Fly and Phorid Fly.

Rodents: Deer Mouse, House Mouse, Norway Rat, Pack Rat, Roof Rat, Vole and White-footed Mouse.

Spiders: Black Widow Spider , Brown Recluse Spider, Cellar Spider, Crab Spider, Domestic House Spider, Funnelweb Spider, Garden Spider, Ground Spider, Hobo Spider, House Spider, Jumping Spider, Spiny-backed Orb Weaver Spider, Tarantula, Wolf Spider and Yellow Sac Spider.

Stinging Pests: Africanized Honeybee, American Dog Tick, Bald-faced Hornet, Bed Bugs, Bird Lice, Bird Mite, Deer Tick, Brown Dog Tick, Bumblebee, Carpenter Bee, Cat Flea, European Hornet, Fire Ant, Honeybee, Human Head Lice, Kissing Bug, Lone Star Tick, Paper Wasp, Scorpion, Soft Tick, Thrips and Yellow Jacket.

Termites: Dampwood Termite, Drywood Termite, Formosan Subterranean Termite and Subterranean Termite.

Ticks and Mites: American Dog Tick, Bird Mite, Black-legged Tick, Brown Dog Tick, Clover Mite, Lone Star Tick and Soft Tick.

Other Pests: American Spider Beetle, Bean Weevil, Cigarette Beetle, Cowpea Weevil, Dried Fruit Beetle, Drugstore Beetle, Foreign Grain Beetles, Indian Meal Moth, Larder Beetle, Mediterranean Flour Moth, Red or Confused Flour Beetle, Rice & Granary Weevils, Sawtoothed & Merchant, Grain Beetles, Shiny Spider Beetle, Cabinet Beetles, Centipedes & Millipedes, Chinch Bugs and Earwigs.


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