bjor

Thanks guys. you have all been really helpful. I can see quite well down into the wing and the only areas affected are the wing ribs. The main spar on the leading edge is fine as is the wing tube area. The mice have gnored around the lightening holes in the wing ribs effecting about the last 4 - 5 ribs - about 20% of the wing from the tip. Some of the ribs are lightly gnored and 2 or 3 have been chewed quite bad. I dont really want to remove the covering as it's a custom job and I dont fancy having to replace it. I think I'll take Larrys advice first and try it on a wrecked wing to see how the foam behaves. Thanks again.