Air freshener bug repellant. DIY Aromatic fly and mosquito repellant. Boil a handful of lemongrass, lavender, and mint. Strain. Cool. Add equal parts to six drops of tea tree oil. If you don't have fresh herbs, use extracts in equal parts. Clean any glass bottle or jar. Remove top and labels. Put Barbq skewers or take apart an old sushi roller. Put sticks in bottle.Tie sticks with string, ribbon, green florist tape...anything.