This site uses this specific heading for its guarantee section: "Two Months To Decide" — worth understanding precisely what that framing describes.
This site directly connects this heading to trying SodaPeak risk-free: every order is covered for 60 days from your purchase date, and if it isn't right for you, you can reach out to the support team within that window.
Since this site separately states 30-90 days for consistent results, the two-month guarantee gives real room to judge results within that stated window, rather than deciding on day one or two.