"Peter Crosland" wrote in message
...
Well fancy that, you've kept the cats out and the result is that
something else (normally kept away by cats) arrives instead.

It would be a brave and very hungry cat which attacked a rat defending
its
young - I wonder if cats can contract (or transfer from their paws)
Weils
disease?

Yes. But the main vector is the rats urine.

And water.

Mary