I bought some LGO at the health food store today. I bought a .5 oz bottle for $5.49; it says it's pure essential lemongrass oil. I assume this is the stuff you use for swarm lures, correct? If so, then how should I make lures? Cottonballs? How much LGO per cottonball? Anything else I should know? Can I make a bunch at once and then store them? If I can store them, how should that be done? Thanks in advance for your help.