Hi Kb70,
In that case I would be inclined to give it a clean out (for it’s autumn clean) and put some fresh of whatever bedding you were using. She may decide not to nap in it any more, but at least it isn’t her day nest, so wouldn’t matter quite so much. Hogs quite often just curl up somewhere outside for a nap between snacks too, so hopefully it won’t put her off visiting. If you have a camera in the box you probably know if other hogs use it as well, but if they did they could be passing external parasites (ticks, etc.) to each other. But she could also be re-picking up any parasites i.e. from any eggs which she may have left there. In the wild they would probably just move nests every so often.
Hope it goes well.
