So I've been trying pretty hard to stay away from recessive morphs, but with my pastel yellow belly female being 50% het pied, I just can't.

I'm going to be picking up a pastel pied for her next spring and when I breed them I want to offer a genetics guarantee saying the babies are 100% het, which they will be since she will be paired with a visual male. How do I write the genetics guarantee so that it gives my buyers confidence that they are getting what they paid for but at the same time protect myself.

I've been thinking about promising to refund their money if they don't get a single visual within 2 clutches from a visual pairing (I'm accounting for really bad luck with odds here), but if they contact me saying they didn't get a visual how do I know they aren't lying and the snake had been paired with a male that wasn't even het? I know the babies I sell will be 100% hets, but I'm worried about people lying and me ending up with the short end of the stick.