Heed with about 1/2 to 3/4 scoop of their Endurolyte powder added to a 24 oz bottle for the heat I'm riding in now. (90°F/32°C)
I don't find it tasteless. To me it seems like they changed up their flavor profiles last year and they are too sweet and too flavorful leaving a little bit of the sickly sticky taste that all the others leave as an after taste. But not quite so bad as those.
I take pre-measured packets of the dry mix with me to add to water I get along the way when I do rides more than three bottles long.