I believe there's a post on here that has anecdotal evidence that Baquacil will repell those unicorns. Add a bit of that line cleaner stuff for baqua pools and the smell alone will probably repell just about everything - well, except for that white water mold you will inevitably "acquire".
Matt in a maidens costume - one just can't unsee that.

Matt in a maidens costume - one just can't unsee that.
