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
Are Mice or Rats Easier to Trap?
Intelligence:
Mice can often be much easier to trap because they are naturally curious creatures. It often takes just one or two days to capture a mouse after setting up a mousetrap. If you're having difficulty trapping a mouse you could consider moving it to a different location. Rats can be extremely intelligent and they communicate with each other meaning that any new objects will often bring about suspicion.
Reproduction:
Rats often reproduce at a much faster rate and this can make it difficult to control a rat problem if it's been going on for a long time. Most mice have around eight litters per year with around 5 to 6 pups in each litter. Rats can have between 6 to 12 pups in their litter.
Diet:
Rats can often be ravenous eaters and often require meat or a more substantial food source in order to remain satisfied. This can often make rats very difficult to trap because they can be so fussy about their food.
Size:
Rats have a definite size advantage over mice and this often means using much larger traps and some extra measures when it comes to keeping them in a trap. Because of the extra costs of these larger traps and the need to be more careful with where you set them, the requirements to trap a rat can be considerably higher than what it takes to trap the average mouse. Most rats can reach a length of between 7-10 inches and weigh up to a pound whereas the typical house mouse maxes out around 8 inches including its tail.
Tracking:
It's often easier to track rats because they leave larger footprints and they can cause a bit more destruction with their added size and strength. This can make finding rats throughout your home a bit easier.
