Wayne County, Detroit Rat Control Situation:
Please can you offer me some free practical advice to eradicate rats from my roof space, I am English but now reside in Brazil. Here in Brazil there are no such associations, councils to exterminate vermin, the only choice is either to employ local labour and hope he is being truthful about his qualifications, quality of workmanship, formal training etc. or to do the job properly do it yourself. For several months I have heard pattering of tiny feet in my roof space, the roof space being the area between the bottom of the tiled roof (pantile type tiles) and the top of the plastic false ceiling with only about 4 inches, 100mm in between so snap traps are not practical, I live in the apartment directly below the area contaminated and have not seen any rat droppings in the apartment, the area is approx 9 meters x 15 meters =126 square meters , 29ft x 49ft = 1421 square feet. The apartment is a first floor level approx 4 meters= 13 feet from ground level with no adjoining buildings. Am I correct in assuming that the rats enter up through 4 inch, 100mm plastic rain down pipe from the roof guttering? or up through the toilet sewage system through the u bend in the bowl and then climb a wall to enter the roof space, or do the rats scale the outside 12 meter = 39 feet wall and enter the roof eves. I am considering to remove all the plastic false ceiling to gain access to the infested locations but am concerned firstly that if I disturb the rats they will disperse and then return the same way they originally entered the area, secondly, if l remove the false ceiling will l be the unlucky victim to receive their bite, what do you suggest I do? Poison the visitors first? then if quiet after a week or two remove the ceiling and completely sterilise? (with what can you recommend). I am not concerned with the humane topic of eradicating my guests, they pay no rent. (KK KK ). Also it is my intention to fully enclose the rafters and eaves on the outside with either aluminium or galvanised steel mesh. If you can take time out to advise me, I will be very grateful. For your information a cross section sketch of my roof is enclosed to help you understand the constructional theme of my roof. Would it be practical to remove the plastic ceiling room by room, first destroying the nests if any, then sanitising ,sealing all access points of entry, then to move to the next room etc.? I would really appreciate any advice you would furnish, unfortunately I can not afford to pay your expenses etc. for you to submit a quotation, I can offer you though if you ever visit Brazil a nice glass of cold Chopps (Brazilian draught beer). Fondest regards and in anticipation of a reply many thanks.
My response: Yes, your plan to seal off the roof with galvanized steel mesh should work. But you have to seal 100percent of the openings. Then, trap, properly trap on rat runways, ALL the rats, and remove them from the house.
Detroit Rat Control Tip of The Week
Black Rat Biology
The black rat (Rates Rattus) has likewise been known as a ship rat, rooftop rat, and old English rat, among other names. It is a long-tailed rodent that is native to Asia. However, it is found in practically all parts of the world today. Black rats prefer hotter zones, however, are profoundly versatile, and will look for cover in natural (woods) and unnatural (homes and structures) areas. It is bigger and more aggressive than its brown-colored cousin, but is more vulnerable to cold and has a more constrained diet. Black rats are generally omnivores. They are a genuine threat to ranchers since they will eat a wide scope of farming harvests, seeds, and feed. A large population of black rats can decimate a field of crops, or contaminate a barn full of feed and hay.
A common black rat is 5.02-7.19 in long, including its tail, and weights 4.12 oz. when fully grown. Notwithstanding its name, the black rat is normally not black. Its coat is typically extremely dark brown. In the wild, black rats want to settle in burrows made using the ground litter (leaves, twigs, etc.) found on timberland floors. In urban settings, they like attics and upper floors of structures, making homes from discovered litter, destroyed paper, and insulation.
They are also tasty meals for coyotes, wild dogs, and other predator winged animals. These obtrusive pests are difficult to dispose of once they move in. Talk with your neighborhood experts on approaches to shield your home from being overrun. Keeping your yard free of clutter, yard debris, standing water, and trash will deter them. You should keep all garbage in fixed holders, and pick up outside pet food and feed. Routinely check your home and building for cracks and openings that would give black rats a path to your home. Black rats are keener on living in their normal habitat than in your home; however, they will consistently exploit food, water, and safe shelter.
