The first sauce presented is relatively mild such as Sriracha, which has a rating of 2,200 Scoville units. The final sauce (as of season 4), Hot Ones' own The Last Dab (The Last Dab Reduxx starting in season 6, and The Last Dab XXX starting in Season 10), has a Scoville rating of 2,000,000+.[1] As per "tradition", the guests are encouraged to put a minuscule amount of The Last Dab on the final wing; they are told this is not required, but most guests opt to do so even when already struggling with the heat of the previous wings.