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Preventing bats from roosting on porch #5834327
03/04/17 07:51 AM
03/04/17 07:51 AM
Joined: Apr 2013
Posts: 24
South Dakota
_
_fletch_ Offline OP
trapper
_fletch_  Offline OP
trapper
_

Joined: Apr 2013
Posts: 24
South Dakota
Hello,

I've completed several bat exclusions at this point, but never had one with this scenario. Just a couple bats hang out in the corners of this covered porch. It has been ongoing for years. They do no appear to be going into any nook or cranny, or even in the attic, which has multiple access points due to the strange construction of this old home, that has walls constructed totally out of concrete panels, with grooves that extend up and behind the wood fascia board. Anyway, they just hang out there sometimes, and a small amount of guano accumulates in the pathway to the front door. The homeowners are concerned about their small children getting sick from the guano if they track it through the house, which is why I received the call.

As you can see from the pictures, it is quite a large area, and the staining in the corners is apparent. If I screen off this somehow, what will keep them from roosting in the new corners I'll create? This is one case where I almost think lighting installed under the area would serve as a better solution, although I've never resorted to "deterrents".

I'd appreciate any suggestions anyone has that will not detract too badly from the appearance of the home. I considered doing some blocking off with braking and installing coil steel, painted to match the exterior, but the property owners are afraid it will look junky.

And yes the small bags in the left hand corner contain moth balls, lol... not placed there by me, of course.

Thanks for your help.




Re: Preventing bats from roosting on porch [Re: _fletch_] #5834379
03/04/17 09:27 AM
03/04/17 09:27 AM
Joined: Jun 2013
Posts: 95
Florida
B
bjansma Offline
trapper
bjansma  Offline
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B

Joined: Jun 2013
Posts: 95
Florida
Usually these areas are night time roosts, meaning the bats may rest there for a while mid night but are never seen there during the day. They have a different spot they spend the day. Usually the bats are drawn to the security that the covered dark porch provides.

Painted metal would work, so would something clear like a plexiglass. Don't worry about creating a new corner because the fact that you are lowering that roosting point is going to be enough of a deterrent. The bats will no longer feel as secure about that spot.

If you don't need to make money on the job you could just tell the homeowner to point a box fan up for a couple of nights. Just the air flow will stop bats from roosting there. A couple nights, and they will have a new spot picked out.


Bob Jansma
Re: Preventing bats from roosting on porch [Re: _fletch_] #5834524
03/04/17 12:26 PM
03/04/17 12:26 PM
Joined: Dec 2006
Posts: 7,590
SW Pa
B
Bob Jameson Offline
trapper
Bob Jameson  Offline
trapper
B

Joined: Dec 2006
Posts: 7,590
SW Pa
Bent brown coil flashing installed neatly should take care of the problem.

Re: Preventing bats from roosting on porch [Re: _fletch_] #5835013
03/04/17 10:02 PM
03/04/17 10:02 PM
Joined: Jan 2014
Posts: 25
Michigan
DaveK Offline
trapper
DaveK  Offline
trapper

Joined: Jan 2014
Posts: 25
Michigan
Bats on the front porch video: https://youtu.be/GzTwAeIleX8

Re: Preventing bats from roosting on porch [Re: _fletch_] #5835257
03/05/17 08:44 AM
03/05/17 08:44 AM
Joined: Apr 2013
Posts: 24
South Dakota
_
_fletch_ Offline OP
trapper
_fletch_  Offline OP
trapper
_

Joined: Apr 2013
Posts: 24
South Dakota
Appreciate the input fellas.

Re: Preventing bats from roosting on porch [Re: _fletch_] #5836338
03/06/17 10:37 AM
03/06/17 10:37 AM
Joined: Apr 2015
Posts: 48
Eastern Iowa
Joe Taylor Offline
trapper
Joe Taylor  Offline
trapper

Joined: Apr 2015
Posts: 48
Eastern Iowa
We have had good luck installing painted flashing around the upper perimeter. Taking away 3-4 inches of overhead cover is enough for bats to lose their sense of security. We glued the pieces in place with quarter sized blobs of a basic polyether sealant, but silicone may also work. Using glue improves the aesthetics and allows for removal of the pieces if needed.




Joe Taylor
Paw Control Wildlife Solutions | pawcontrol.com
Re: Preventing bats from roosting on porch [Re: _fletch_] #5837965
03/07/17 07:35 PM
03/07/17 07:35 PM
Joined: Apr 2012
Posts: 1,995
1st civ. Div. Wood County Wi.
M
Mike Flick Offline
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Mike Flick  Offline
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Joined: Apr 2012
Posts: 1,995
1st civ. Div. Wood County Wi.
Nicely done!

Re: Preventing bats from roosting on porch [Re: _fletch_] #5838443
03/08/17 08:31 AM
03/08/17 08:31 AM
Joined: Feb 2012
Posts: 76
Maine
huntinjunkie Offline
trapper
huntinjunkie  Offline
trapper

Joined: Feb 2012
Posts: 76
Maine
Was that attached with nothing but adhesives?

Re: Preventing bats from roosting on porch [Re: huntinjunkie] #5838623
03/08/17 11:39 AM
03/08/17 11:39 AM
Joined: Apr 2015
Posts: 48
Eastern Iowa
Joe Taylor Offline
trapper
Joe Taylor  Offline
trapper

Joined: Apr 2015
Posts: 48
Eastern Iowa
Correct, this was attached only with adhesive. If I remember correctly I dabbed a quarter-sized blob at each end, and then about every 2.5-feet in between. We talked through the pros/cons with the customer. First, we explained why we thought that this technique would work, but said we had not yet tried it out. So we thought using only adhesives would allow for its removal if they continued to find bat droppings (they have not seen any, which is a big deal to them based upon the constant sweeping they use to do). This is an expensive home, so both aesthetics and deflecting bats were high on their priority list.

Second, the only other practical way to secure these would be to drill screws into the mortar. This would be more intrusive, the screw heads would show, and would be more work (and more expensive). We told the customer that we were in the version 1.0 stage of this exclusion technique, and that if any of the pieces became dislodged or fell, then we would come back and fix it or find a different approach.

As a side note, the first picture shows a bat tucked in the corner. I had already excluded the opposite side and had my ladder set up next to the bat. I was in the process of retrieving the bat when it decided it would take off on its own. It dropped and flew to the opposite side of the porch and landed just beneath the metal I had just installed. It tried to climb up into that corner, reached its front thumb up to grab higher, and its arm skidded down the metal several times before it gave up and left. At that moment I became optimistically confident that this was an exclusion technique that would work.


Joe Taylor
Paw Control Wildlife Solutions | pawcontrol.com
Re: Preventing bats from roosting on porch [Re: _fletch_] #5839489
03/09/17 08:45 AM
03/09/17 08:45 AM
Joined: Feb 2012
Posts: 76
Maine
huntinjunkie Offline
trapper
huntinjunkie  Offline
trapper

Joined: Feb 2012
Posts: 76
Maine
Nice. I'm made the switch and trying to do all my exclusions with metal this year. Always looking for recommended tips on attachment options.

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