Natural Bug Spray: Here's what you'll need: essential oils (citronella and lemongrass are musts, I also like lavender or you could use tea tree oil or geranium oil for tick protection), 14 oz. bottle of witch hazel (available in grocery stores & pharmacies usually close to the rubbing alcohol), a spray bottle (or two--one for home and one for the diaper bag/car), a jar for mixing, and a funnel.