Not related to reefing BUT I need HELP

[jason604]

For the past week we been noticing more raccoon behavior around my koi pond than normal. They use to just come n take baths on the small stream we made to lead to the pond. We have a mesh covering the whole thing so it's never been a problem until recently that they smartened up n tore the net in certain areas that gives them easy access to the pond. Yestersay my dad notice one of our 12" koi was acting weird n there was a tear in the mesh n the water reaked so we fishes him out to medicate him thinking he's sick. Then today he died and after inspection we saw teeth puncture wounds on the underside of his belly!! Does any1 know of a good way to repel raccoon. We got a lot of high end koi fishes in our pond and would hate to see more go like that. Currently pointing a motion sensor light in the direction of the pond but that doesn't seem to scare them.