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
How Do Rats Use Pheromones To Communicate?
Releaser Pheromones:
Rats communicate using releaser pheromones to send information to other rats that they are in their own territory. Rats often urinate in areas to send information that they are ready to nurse or that a specific area where their nest is located is their own. Rats use these releaser pheromones to claim territory and to make sure that other rats will stay away.
Primer Pheromones:
Primer pheromones are designed to be excreted during the peak of fertility and this is the type of pheromone that sends sexual signals to males in the area. These scents are released in order to attract males and to make sure that the female is going to mate during a time where she is more than likely to conceive.
Primer pheromones are some of the main types of communication tools used by rats and it's one of the most powerful ones that can be sensed in the area. These responses are triggered by the area of the brain called the Vomeronasal and this refers to the overall sense that an adult male gets of the pheromone.
Information Pheromones:
These types of pheromones are designed to be useful for identifying something about the animals or about the area. Rats often use these to convey fear or to share information about an area. Certain species of rats can share information about a food source, safe space, and more with these types of pheromones. Most of the time informational pheromones are designed to identify the smell of other species and to warn other rats of dangers in the area.
Scientists are continuing to study rats to determine the total number of ways that they are able to communicate by pheromones alone.
