This is an often asked question with a simple answer.
Here’s what to do
1 Cup Sugar
1 ½ Cups Water
In a heavy pan on low heat, stir to with wooden spoon until all the sugar is dissolved. Run the spoon around the edge of the pan to keep the sugar from crystallizing. Next, bring the mixture to a boil for 3–5 minutes, scoop of any accumulated scum and remove from the heat. Let cool and pour in to a clean squeeze bottle. You can keep this in the fridge for a month.