Even if your hedgehog is never outdoors, you can bring in fleas or
flea eggs on your shoes or clothing.

There's a whole FAQ dedicated to ridding your pet and your home of
fleas and ticks.  It's distributed in the rec.pets usenet newsgroup.
You can also get it by FTP at:

        ftp://rtfm.mit.edu/pub/usenet/news.answers/

(that is, ftp to rtfm.mit.edu and get the indicated file) or by sending
email to mail-serverREMOVE_TO_SEND@rtfm.mit.edu with the line

        send usenet/news.answers/fleas-ticks

in the body of the message (with an empty subject line).

In general, most products which are safe for use on kittens and puppies are
likely safe for hedgehogs (though avoid those products listed as long
lasting).  Keeping in mind that bathing baby or young hedgehogs can be
dangerous and should be avoided if possible [6.5].  It is better to spray on
such products.