Squirt is readily available most anywhere in the US, I'm quite certain. I know it is here in LosAngeles. However, as you say, it is now using HFCS, as do most sodas. Mexican-made sodas usually do not use the HFCS, so that's why the one you drank there tasted as you remembered from "back in the day". If your area has a Hispanic grocery store, try there...they sometimes carry the "imported" version of the American brands. I know the stores and restaurants here do. Hope this helped.