Why Rat Control Within Sewer Systems Is Necessary
It is an unfortunate fact that massive amounts of Norway rats inhabit sewer systems, especially in big cities. Because of this, below ground rat control efforts are important for minimizing rat pest issues within above ground locations, mainly homes and buildings. Underground sewer systems are large enough to allow Norway rats to proliferate unchecked, and although it may be hard to believe, sewer systems often become overcrowded with rats, causing the pests to migrate into residential yards and inside of homes.
When sewer systems become overcrowded with Norway rats, the rodent pests become abundant within urban and suburban areas. In fact, it is not unheard of for rats to emerge from indoor drains and even from toilet bowls in response to overcrowding in sewers. In most cases, rats that migrate out of overcrowded sewer systems establish ground burrows on urban and suburban properties, particularly beneath concrete slabs, up against housing foundations, within crawl spaces and in flower beds. Sewer rats are also responsible for causing significant structural damage.
Norway rats are known for burrowing in soil located around sewer structures beneath homes and buildings. Sewer system structures are generally outdated, making it easy for rats to burrow through and around deteriorating masonry and faulty joints. Rats excavate nesting chambers in between sewer systems and structures, sometimes causing foundations, roads and concrete slabs to cave in to underground cavities where soil has been discarded into sewer systems.
Obviously, sewer rats present a significant disease hazard to humans. For example, Norway rats are the main carriers of spirochete, Leptospira icterohaemorrhagiae, which causes a jaundice condition known as Weil’s disease. Rats spread leptospires through their urine, and water contaminated with rat urine often comes into contact with swimmers, sewer workers, and in rare cases, indoor running water. Sewer rats are also significant carriers of Salmonella bacteria that cause food poisoning in humans.
Have you ever heard of a rat emerging from a drain or toilet?
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