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
How Deep Do Rats Dig Holes Or Burrow Under Houses?
Asides from being a very smart animal with a high sense of adaptability, rats are keen diggers. With their dexterous paws and strong teeth, they can chew through plastic, wood, and even aluminum. This clearly shows how much of a good digger these rodents are. Also, if you have holes around your house, these rodents might be responsible for creating them.
Maybe you have rats digging holes or burrows under your house and you have always wanted to know how deep these holes are. The fact is these excellent diggers can dig holes as long as 3 feet and as deep as 18 inches. This digging skill allows them to create deep burrows and holes under your home
Due to their smart nature, rats don't just dig burrows and holes blindly. They dig with plans and prepare for the worst-case scenario by creating one or two exit points apart from the entry hole, in case they are attacked by a predator. Therefore, if you see a rat hole or burrow around your house, you must look around to find its exit hole. Unlike the entry hole which is usually clean and free from dirt, rats usually use thatches of grass to conceal their exit holes. This simply means you have to look around carefully to find it.
While examining these holes and burrows, you need to be very careful and avoid moving too close to it. Snakes or any other harmful animal could also be inhibiting the hole. If you have to dig in the hole or make close contact, make sure you are well protected.
