How do you get rid of water boatmen and backswimmers in a saltwater pool I have read where BioGuard works wonders for chlorinated pools but does it work for saltwater If not what does?

Salt water pools are in fact chlorine pools part of the salt is turned into chlorine by the salt water chlorinater If it works in a normally chlorinated pool it should also work in a salt water pool. However you should check if there is any metallic ingredient like copper in it as these are not recommended in salt water pools.