Rusty Hookz

I have bought the Gamakastu live bait circle hooks and attached them to my Spook Jr…. they work great. the problem is after the first use of them.. they are already rusting.. At 6 dollars a pack .. they are a bit pricy and not something you wanna go through!!  I rinsed well water after fishing .. anyone else have these problems and what else can I do to deter this problem.. or is there another brand that does the job better!! thanks for any info…. tight lines!!