Affiliate disclosure

Right now this site has no affiliate links. Retailer links go straight to the seller, and we earn nothing from them.

If we add affiliate links later, each one will be marked "Sponsored link" next to the link. Money never affects what we publish. A kit's certification status, its fit with state laws and its place in our tables come only from the evidence described in how we verify. A seller cannot pay to be listed, to rank higher, or to change a status.