Do your mixing in the bottles themselves.
Weigh a full container. Take it's weight times .66. This is how much sugar you want to put into the container. Actually assume the container weight isn't negligable and round it down a bit.
Get a tea kettle and boil water. Fill the container so it is full, then stir or shake.
If you have more than a tea kettles worth then get two until you have enough that a hose at the hot water heater makes sense.
At least the sticky mess will be contained to your work area.
Weigh a full container. Take it's weight times .66. This is how much sugar you want to put into the container. Actually assume the container weight isn't negligable and round it down a bit.
Get a tea kettle and boil water. Fill the container so it is full, then stir or shake.
If you have more than a tea kettles worth then get two until you have enough that a hose at the hot water heater makes sense.
At least the sticky mess will be contained to your work area.