Mmm... sugar water to kill beetles... why would they eat the sugar
anyway? If they're leaf eaters, I guess you're trying to have them
accidently eat it?

Plus, what about the ants? Big-headed ants, thief ants and little
black ants may be attracted to the area. Possibly even fire ants,
though they prefer protien and greases.

Kinda' like frying pan into the fire...