Amazon is seriously effed up.
They're selling a half gallon of sugar water for $5.00 (with free shipping for qualifying orders).
If I were to sell that same product on Amazon as a seller, Amazon would charge me around $8.00 in fees alone, even if I was selling the same bottle at $5.00.
If you are looking for something that doesn't go bad try honey. I bet everybody on this site will tell you honey is a superfood for ants that never spoils.
Veteran members of this group know that honey contains multitudes of microorganisms that start growing and fermenting the sugars the moment the honey is exposed to moisture, either by making a honey water solution or simply by leaving it open in air.
Color in honey or other syrups is the result of degradation of sugar—not really something you want to see. Ants aren't receptive to anything aside from the chemically defined sugars and salts.
If your ants eat the honey, fine; it isn't bad for them at all. But ants will typically be more receptive to other forms of sugar. And you never want to use honey in a liquid feeder because the fermentation problem can cause leaks.
Edited by drtrmiller, September 3 2019 - 4:06 PM.