Pesach Questions

I eat a gluten-free diet, so aside from a little oatmeal, i really don't have any chametz in my kitchen, year round. Every year I simply eat or give away whatever is left of oat products before Pesach. However, it never occurred to me that I may still be in possession of chapsticks, hand sanitizers, and maybe even vitamins that could have chametz ingredients. Do those things need to be sold? 

All of the items you've enumerated here are considered non-edible, and it is therefore permissible to own and use them on Pesach even if they do contain chametz ingredients. It is customary to use a new chapstick for Pesach (same with lipsticks), simply because this product had come into such close proximity to our mouths. 

RYK