Here in SoCal there's a far better product to deal with snails/slugs...it's called "That's It". So far I've only seen it at Armstrong's Nurseries. The granules are small and hard...kind of like sand but a little larger. Unlike sluggo they won't dissolve with frequent watering and they are lot more potent.
Not sure if you've seen it but here's an excellent article on
growing orchids outdoors in Southern California.
There's also a
group on flickr and a
page on facebook for all orchid hobbyists in Southern California.