how rodent proof are welders

[topher5150]

I was digging through the shed yesterday, and noticed what looked like a mouse nest on the floor. I started looking around to see if they had done any damage I pulled the cover off the welder and it looked like they packed away a bunch of seeds under that cover. I'm just wondering how likely is it that they got into the welder itself?

 

[Boneebone]

There's a good chance they may have gotten inside, as mice and rats have the ability to flatten their bodies out so they can squeeze into small spaces relative to their size.

If they can fit their head in there, they can fit the rest of their body in there.