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Old 03-07-2012, 07:46 PM   #16
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Bats in the attic


I formerly worked for a pest-control company for 8years who provided this line of work i will be more than glad to help you with anything on this issue.
1st the attitude live with them in your home is a bad one.
reasons

a) bats can and sometimes are found to be rabid although not at a high%

b)the more concerning issue. Bat Guano can be very dangerous to you and your family over time as bat guano dries out it becomes airborn and can seep into the living spaces of your homes threw the walls. The problem with this is that bat guano can cause hystoplasmosis (a fungus that can grow in bat guano).

the appropriate steps of action would be

before anything you may want to check with the local department of agriculture bats are protected in some states thru certain times of the year for breeding purposes and you may not be allowed to mess with them with out a permit or waiting the time frame out.

placing a bat box will not fix a problem it may help prevent one but once the bats have set up shop they will not leave it. im not sure what state you live in but bats also migrate depending on the speceis and they will return the following season as birds do.

1st find the entrypoint.
with bats this is usually around the area of the home yo see them hanging out around dusk, area of droppings or area of black greasy marks. It does not take a large hole for a bat to make entry into your attic.

please be advised that if you intend on entering your attic space to conduct such inspections to walk very carefully as most attics are not finished and have no floors so you can only walk on the joists. also wear a respirator or dust mask at a minimum and gloves like surgical gloves.

step 2 would be after you find the entry you need to ensure that the bats are not in the attic at the time you wish to seal the entry point.

there are several ways to let bats out and not back in
1) you can purchase a bat cone or one way door
2 you can drape netting down over the entry point like 1/2" x 1/2" size netting draping aprroximatly 1ft over and 8 feet below the hole. this allows the bats out and they will navigate down behind the netting but can not find there way back in.

step 3 sealing the whole.
you need to seal the whole with plastic hardware cloth wood or something of the sort. do not use expandable foams the bats will chew right back thru it.

after these steps have been completed you need to clean the atticspace of the bat guano. remember gloves respirator or dustmask and be careful.

after this has been completed you may need to reinsulate some area's and use a cleaning soulution in the attic around area of guano such as wall boards and dry walls to break down the urinie. bat urine smells horrible btw.

after that you may place a bat box around the exterior some where they are not hard to construck and the instructions can be found online.

bats are a great benefit to have around as they consume tons of bugs
there the greenist solution to a mosquito problem.

if you have any other questions feel free to ask also i am in the process of working on a site for pest related help. i sell no products there just give advice on these and other pest issues.

Thanks for your time and good luck to you.
matt

Last edited by oh'mike; 03-07-2012 at 08:28 PM. Reason: Removed link---Moderator
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Old 03-07-2012, 08:27 PM   #17
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Bats in the attic


Matt--That is a well done post--accurate and easy to understand---

However,you can't post a link to your site in your post---kind of breaks the rules---

Pros can add a link below the signature line --read the posting rules for pros--and welcome---Mike---
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Old 03-07-2012, 08:46 PM   #18
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Bats in the attic


Some years ago my son bought a house built in 1921, this house had a huge attic. Not long after they had moved in there were noises coming from the attic and we discovered literally thousands of bats living up there. As previously stated, the bat guano caused quite a smell in the house also. There was an older gentleman who lived on this street and he told us that most of these older houses had bats at one time or the other. He had his way of getting rid of bats so we tried it and it worked. First: You do have to find every point of egress, each quarter sized hole will allow them to enter or leave. Then we decided which hole was the largest. We covered all but the largest hole with plastic hardware cloth, somewhat like 3/8" mesh, stapling it so the bats could not leave nor enter. This left the largest hole. We draped plastic hardware cloth over this hole as previously stated. This allowed the bats to leave the hole, drop down a bit, then take flight. But--returning was different--bats cannot fly back up under the mesh. They have to somewhat "ring" the entrance hole with a direct path. We would watch them leave this one hole at dusk, thousands (it seemed) would leave. When they returned they would just smash into the netting and be confused, then go find a new home they could gain entrance to. The bat problem was gone within a week or so and we sealed all the holes to prevent them from coming back.
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Old 03-07-2012, 08:54 PM   #19
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Bats in the attic


Good info--this is the first I've heard of the 'bat flap' thank you Matt and Thurman---
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Old 03-11-2012, 10:11 PM   #20
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Bats in the attic


Very good information. My wife and I are getting ready to paint our home, and this will give us an opportunity to comb over the exterior and seal every mode of egress and ingress. A little confused on the description of the cloth over the hole. In my opinion, the bats are leaving and entering through a roof vent at the peak of our attic. Do I drape the cloth down from the vent on the inside of the attic? Do you have any pictures of this technique demonstrated? And what time of year is best to do this (pre-mating season, spring/fall)? We live in central IL. Thanks!
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Old 03-12-2012, 05:56 AM   #21
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Bats in the attic


The flap sound like it must be out side so they can not fry ing--but can drop out under it--

Might not work for a roof vent---
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