Cotton Ball Bug . You’ll have to do this once a week for a few weeks to get rid of every mealybug. Punctipes [say]), a large grey species, and g. Snow Ball Large Mealybug Monophlebulus sp. from www.brisbaneinsects.com Soak a cotton ball in leftover wine, dab it on mealybugs, and use it once a week till infestation disappears. Planthoppers are insects that closely resemble plants that grow in their own environments. Mix 2 cups of coconut oil, 1/2 tsp liquid soap, and 1/2 tsp of neem oil (optional) in 2 liters of water.