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Dayle1's avatar
Dayle1
Explorer II
Jun 05, 2015

Mice mystery

Now, if I have your attention, maybe you have another perspective that will get me to the right answers. #1 The obvious question is how do mice get inside the trailer? #2 How can they get into the ceiling?

My fiver has been inside my steel RV garage for 2 months, now 2nd night on the road and I've got a mouse inside the ceiling. Not on the roof, but directly on the ceiling panel. Heard it last night in the bedroom and this morning further back toward the living room.

Doesn't seem logical for a mouse to go from the basement or living area up to the ceiling, especially with all the supplies we loaded into the trailer in the past week. And I can't see how a mouse could get on the roof to enter from above. And then once on the roof, how to get into the ceiling? I've come up with just one possibility. At the A/C, maybe chewing thru the gasket and then thru the A/C duct?

Anyway, help me solve this mystery.
  • Doesn't seem logical for a mouse to go from the basement or living area up to the ceiling, especially with all the supplies we loaded into the trailer in the past week. And I can't see how a mouse could get on the roof to enter from above. And then once on the roof, how to get into the ceiling?


    Yes it does, and that's how they do it!!:B

    They get in from the myriad of holes UNDER your RV. From when the manufacturer drills holes for all the water pipes, electrical, etc.

    Mice crawl in thru those holes under your RV into the inside of your RV and THEN crawl into your vents and voila...they are in your ceiling ducts.

    Go out and night and turn the lights on inside your RV.

    Then crawl under your RV and be prepared to be amazed of the light show from ALL the openings around each hole the manufacturer had to drill to wire/plumb your coach. Need to fill them all in with expanding foam product like "Stuff".
  • When I sealed the power cord inlet and spray foamed all the pipe entrances (underneath floor and under sinks) on our very remote vacation TT, we finally kept them away. And, like you, we got a few in the motorhome while in a metal building. We did a hospital grade cleaning to remove the scent trails (hopefully), and caulked every opening, and made the power cord entrance a twist on style, so that no bay door, or little plastic cover could be pushed open. Does that kitty litter idea work? I've got to remember that one, too!
  • Get yourself a nice big snake and let it loose in the coach. Snakes like mice...:B...Dennis
  • We were at a campground and seen a mouse go up the electric cord on our nabors RV and right in side ... I couldn't believe it
  • Hi Scott,

    Mice don't mind foam. Next time squeeze in some metal pot scrubbers with nice sharp edges before you foam.

    ScottG wrote:
    As far as the ceiling is concerned, When my TT was new I noticed the fiberglass cap extended down below the frame in front. It was actually open to the underside of the trailer and a mouse could have easily enter there, climbed up the thin insulation in the cap and gotten into the tiny attic in the ceiling.
    I sealed the area up with spray foam.
  • midnightsadie wrote:
    a mouse only needs a hole the size of a dime. and they can find away.



    X 2 I know this from experience
  • As far as the ceiling is concerned, When my TT was new I noticed the fiberglass cap extended down below the frame in front. It was actually open to the underside of the trailer and a mouse could have easily enter there, climbed up the thin insulation in the cap and gotten into the tiny attic in the ceiling.
    I sealed the area up with spray foam.
  • Move a cat into your steel RV garage. Mice find their way in, cats find/scare mice. Cat food is cheaper than RV repairs. When I worked for a major phone company, I would encounter customers that had multiple issues with mice chewing wiring outside/under the home. If they owned a cat, I would advise them to dump their cat box near the site of the latest mouse on wireing attack. I rarely had a second call from customers that heeded my advice.
  • I've talked to a few mice and most of them said they climb onto the waste tank, shinny up the vent pipe and then relax in the ceiling cavity where it's nice and warm with plenty of bedding. Not one of them has said anything about how they are driven out but I guess those trapped or poisoned aren't around to tell the tale.

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