Bush snails- will full repot cure? SH culture?

[sunfire]

I discovered that an orchid I purchased several months ago had snails when I went to remount it. I removed all the old moss, used a new mount and new moss and didn't really think too much about it further.

I have found another plant that was in very close proximity is also now infested. I am repotting that as well.

Question- is a simple rinse and repot with all new media enough? How tenacious are the eggs or juveniles? I'm wondering if I should have done more? The infestation was not severe as far as I could tell, but I did find several adults.

Also, can you develop a snail infestation in semi-hydro culture? It seems that media would be less conducive to snails but that's why I'm here to ask.

Thanks.