Hennepin County, Minneapolis Rat Control Situation:
Hi, David, Thank you very much to establish your very educational and candid website. I bought a house half a year ago and it had rats in the attic and in the crawl space. I hired a rodent removal guy to take care of the problem. I spent almost $1000 but I still had rats - he didn't seal all the entry points. Anyway, I then did a lot of research in rats. lol. According to my rodent guy, there was about 10 rats living in my attic. But his trap caught none after sealing all the holes (He thought he did but there was two crawl space vent open). He then claimed that all rats gone because they are "scared". Later I set traps myself and I caught two large roof rats (really large, almost 12 oz each I would say). After that, no more caught. In October, I hired an insulation company to remove ALL the batt insulation from my attic. There was still thousands of droppings left on the joist bays. I painstakingly vaccuum them out (me wearing face masks). Now the attic is clean. However, I could not find ANY gnaw marks on wood, nor electric wires, nor on anything else. Why is that? How could it be? This house had tens of thousands of rat droppings in the attic, thousands of droppings in the garage and thousands in the crawl space. But I am not able to spot their damage other than the droppings? I thought rats have to chew on stuffs to keep their teeth from growing too long. I hope you could help answer this question. It always bugs me if there is something unexplainable. Thanks! Guangchi from Minneapolis Area
Minneapolis Rat Control Tip of The Week
New York City's Rat Problem
The Norway Rat:
The majority of rats in New York City are Norway rats, otherwise known as brown rats. Brown rats typically weigh 1 pound and they can grow up to 16 inches long. A brown rat needs just 1 ounce of food and water every day to survive.
Brown rats are known for their ability to climb through pipes and get through small spaces. Even though some of the largest brown rats can be up to 20 inches long and weigh more than 2 pounds, it's easy for them to fit through a hole that's the size of a quarter. Rats have some serious superpowers and are capable of falling up to five stories without any injury and leaping up to 4 feet for climbing.
Going Through Any Material:
Rats also have extremely strong jaw muscles and quality teeth. There are rats in New York that are capable of chewing through cinderblocks and sewer pipes.
Where Rats Live:
Most rats will rarely travel more than 600 feet away from the area that they were born. Most rats like to nest and burrow in soft ground as well as below ground to live in colonies. A rat colony is usually between 30 to 50 rats and the number of rats in a burrow or family is usually between 8 to 12. Rats stay close to their food source and they can often be found just a few hundred feet from where they go every day to be fed. Public garbage areas, alleyways, and more can be a hotbed for rats and NYC produces its own information portal on areas where rats are heavily concentrated.
It's estimated that there are roughly 2,000,000 rats in New York City and this means that the rat population in New York City sits around 25% of the total number of humans.