Ken, here are a few other ideas:

http://www.homesteadingtoday.com/hom...ae5a30b72f.htm

http://www.wildlife-museum.org/allab.../raccoons.html

Note that both electricity and dogs are amongst the suggestions (so I'm not
the only cruel and evil person on earth).

But I think that the motion-detector-operated lights and radio seem the
easiest to install quickly, and the most "humane". Racoons are nocturnal,
and the lights will definitely send them scurrying. Loud noises from radio
in addition should give you a sure thing.

You can get a few cheap motion detector light-fixtures from Home Depot or
Walmart for about $10 each. In place of one of the bulbs, screw in a
socket-receptacle, and plug your radio in there. You'll need to get some #14
romex (#12 if the run is greater than 100-feet), a few plastic "wall" boxes,
some twist-on wire connectors, electricians tape, and a male wall-plug. It
should take about an hour to string it all together. Don't worry about being
water-tight. Just make sure you plug into a GFI-protected receptacle. Use
outdoor light bulbs. The indoor variety will work, until the rain hits them
when they are on. The cold water hitting the hot bulb will cause it to
break.

Forgiven?