Bloody hell! They came back!

Last night I was awoken by a very loud and strange noise.  Looked out
the window and saw two dogs at the guinea pig hutch.  So the mystery
as to what happened to the last two has been solved and they weren't
stolen as presumed.  This time thank god the piggies were inside and
safe.  They managed to get the wire mesh off this time too.

It's a pain because now the piggies will never be able to be in their
outside hutch unless I'm home.  I've called the dog ranger and
apparently they can come and set traps.  I'd like to string up the
owners by their balls just quietly.

Anyone have anything to offer?  How to deter dogs?  I'm keeping the
piggies inside now but I don't want our hutch to be wrecked again.

Megan