Any entomologist's on the site??

[badger]

Didn't think I would be asking this question on here but here goes, I am being plagued by beetles in the garden and a few are starting to appear in the house now and freaking the wife out a bit. I have trawled the internet and found that the beetles are called Clivina Fosser [not ringo george paul n john]. They are quite agressive and attack one another and have filled my outside sink drain with dead carcasses and I have even seen one beetle pick up a dead one and drop it in the drain !! :eek .
So my question is will they do any damage to the house i.e. bore into wood lay eggs and cause a bunch of problems down the line? or do I just leave them be and let nature take it course?
I'm going to give the council a call tomorrow to see what they advise as well.
many thanks
badger