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Old 10-27-2015, 07:52 AM   #1
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More Mouse Problems

I recently reported about finding a mouse nest under my solar panel. Got that taken care of with some chicken wire. Now new issues have cropped up - all on the outside, no problems in the trailer - yet!

I have a 195 with a wall mounted AC. It has a roof vent right above it, which I assume is a fresh air vent. While cleaning the roof I noticed a huge mouse nest under the vent. It has an opening around the bottom of the vent, and the top appears to be screwed on - the screw heads are caulked. I looked inside around the AC unit and cannot see any problems, but I also cannot see what is the construction of the vent.

My question is....are there openings in the vent large enough for a mouse to get through?

Next logical question concerns the two small round plumbing vents on the roof. Is that a possible mouse entry point?

I'll put more chicken wire on the roof if I have to.

Final question - the nests thus far have been constructed of grass, etc., mixed with a white cotton-like material. The **** mice are eating away the fabric on the back sides of my tire covers. Should I remove them for Winter?
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Old 10-27-2015, 08:41 AM   #2
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Mice can get into and out of any opening smaller than their skulls.


The most effective solution I've found has been poison bait stations in and about the buildings. And check the stations monthly. Freshen the baits as needed.


Until you reduce the population pressure to locate new housing and food supplies the vermin will constantly probe for resources.
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Old 10-27-2015, 08:54 AM   #3
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Mice can be a pain. Can you post a picture of the vent cover in question? There are a few different styles. Usually there are some type if clips so you can remove them fairly easily.

If the mice went down the waste tank vents, they are done for, they will die, and be flushed out in the spring.

As for the tire covers. You really should have something covering the tires. It sounds like if you do nothing with them by spring you will not have any tire covers left. I use some scrap plywood cut to slip under the wheel well. Painted them white.

Depending on what you have around your place for animals there are a few different items you can use to remove them from the area. If you have a spot they like to go (tire covers) bait them and either poison or trap them. Just remember if you use poison, the dead mice might be eaten by something else, which will be poisoned too. Peppermint oil (must be the oi) will detract mice and other critters. I like spring traps, if it is somewhere I can get too frequently. Stick traps are nice to, as you can catch multiple mice on one trap.

I have never had any luck with the so called remedies such as bounce drier sheets, Irish Springs soap, Moth Balls. My preference is bait and catch, but have had good luck with Tom Cat bait blocks and poison wheat.
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Old 10-27-2015, 11:41 AM   #4
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Originally Posted by mike837go View Post
Mice can get into and out of any opening smaller than their skulls.


The most effective solution I've found has been poison bait stations in and about the buildings. And check the stations monthly. Freshen the baits as needed.


Until you reduce the population pressure to locate new housing and food supplies the vermin will constantly probe for resources.
Save for the poison this is pretty much what I suggest. Make sure there is nothing in the trailer to attract them. I'm talking about food wise. Make sure there is no growth around or under the trailer, tall grass, brush, bushes, etc. As Mike said, they need a place to go, but you can do things to make it less attractive for them.

Regarding poison, it works great. The caveat being if you have pets, especially cats that might end up catching and eating a poisoned mouse. The pet can get sick or die themselves.
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Old 10-27-2015, 01:39 PM   #5
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Save for the poison this is pretty much what I suggest. Make sure there is nothing in the trailer to attract them. I'm talking about food wise. Make sure there is no growth around or under the trailer, tall grass, brush, bushes, etc. As Mike said, they need a place to go, but you can do things to make it less attractive for them.

Regarding poison, it works great. The caveat being if you have pets, especially cats that might end up catching and eating a poisoned mouse. The pet can get sick or die themselves.
No pets get anywhere near the outbuildings. The local predators (redtail hawks, owls, coyotes, fox...) have plenty of forest and fields to hunt in. They generally stay clear of my barn/shop.
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Old 10-27-2015, 03:55 PM   #6
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Here is a picture of the vent. It looks like it attaches from the top with 2 screws, which are caulked over, so I guess it shouldn't be removed. My concern is the size of the screen inside, if there is a screen.

I think Poison would be futile. The trailer is in the middle of a 1/2 acre lawn, surrounded by hundreds of acres of woods. There must be a gazzilion mice around us.

Thanks for all the replies so far...
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Old 10-28-2015, 08:41 AM   #7
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Amazon sells a product called "Cab Fresh" it was designed for farmers to help keep mice out of the equipment cabs and has a nice mint smell.. I can vouch for the statement that dryer sheets DO NOT WORK..
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Old 10-28-2015, 08:56 AM   #8
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Peppermint oil is a good natural barrier and can be used around any part of the trailer coming in contact with the ground.

The baits are also good, just hope they die outside.
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Old 10-28-2015, 09:35 AM   #9
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Peppermint oil must be 100% strength to work is what I found out... I ordered mine from AMAZON but I think WEGMANSs carry the 100% pure stuff... Hard to find anywhere else in the big stores...


Mice are almost blind and run with their noses...

We carry a zip-up bag with a bunch of cotton balls soaked in peppermint oil to push in areas where we see mice traffic signs.

The other day I posted this trick someone came up with on-line and I had to try ti out haha.. i caught ONE MOUSE and threw him outside into the woods area. He probably beat me back to the trailer haha...



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Old 10-28-2015, 09:37 AM   #10
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Originally Posted by gypsmjim View Post
Here is a picture of the vent. It looks like it attaches from the top with 2 screws, which are caulked over, so I guess it shouldn't be removed. My concern is the size of the screen inside, if there is a screen.

I think Poison would be futile. The trailer is in the middle of a 1/2 acre lawn, surrounded by hundreds of acres of woods. There must be a gazzilion mice around us.

Thanks for all the replies so far...
That long roof vent is for the refrigerator, you should have an outside access panel down low below it. Double check the very top of the vent. There are four screws as I recall, in a series of indented slots running the length of the TT, as I recall, the slots fill up with crude and such and the screws were not very noticeable. When I removed mine, for inspection a few years ago, I found I had hardware cloth at the roof level to keep debris and animals out. A hole would allow a mouse to get in. You can open the lower access panel, with a good flashlight and a camera, take a few pictures upwards and see if the nest is gone, and have gotten inside the refrigerator access cabinet. You will never get your head in there to look up.

As I was looking at the picture, I was wondering how the mice are getting up onto the roof? I would figure out how to stop them from getting up there. Next if they are climbing up the side of the TT, I would install a vent cover over your furnace port. I have a friend with a seasonal site. Their neighbor had a large bill last spring as a mice climbed in the exhaust port, made a nest in the fan, and chewed up wires in the furnace.
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