Did you hear about the Arizona toilets infested with rats???

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Small, white rats are swimming through the sewer pipes and into the toilets of homes near the University of Arizona, said the The Associated Press. They also said that this isn't the first time this has happened. The rats supposedly regularly show up once or twice a year and no one knows why. Isn't this gross?The county's Wastewater Management Department has no idea where the rats are coming from, but they do know they are the kind scientists use in laboratories for research. The university claims that they are not to blame, pointing out that the same kind of rats are sold in pet stores as food for snakes and other animals. George Humphrey, who is the spokesman for the Arizona Health Sciences Center said university researchers follow strict guidelines for their lab specimens and humanely euthanize their rats when they are no longer needed. "There would be no evidence that these are connected to us, and I wouldn't want that to become an urban myth," Humphrey told AP. What's can a homeowner to do? Well one woman purposely left the toilet seat up and put a piece of sticky trap paper on the bathroom floor. She closed the door to the bathroom, and when she checked back later, the rat got himself caught on the sticky paper, which she threw away in disgust. "You have to give those rodents credit, though. Making it up the line from the sewers is not easy task, but quite possible since there is no barrier between the house connection sewer and the main sewer line. Still, once a toilet in the house is flushed, the rats have to hold their breath and then swim uphill in the pipes against the current", according to Laura Hagen Fairbanks, spokeswoman for the county's Wastewater Management Department.