How do you make an unwanted Racoon go away?

There has been a couple of Racoons in the neighbourhood lately making quite a mess, getting into garbage, and gardens, our garbage is kept in the garage until trash day, but Mrs Squeeky has a nice garden with a little bubbling pond and one of these little buggers thinks it’s his personal Jacuzzi, and has been getting into her flower bed, so how do you make these things go away peacefully, with out harming it or us?