Lemon tree with fuzzy white undersides on leaves and trailing ants has mealybugs—ants farm their honeydew. The "fuzzy white" is waxy secretions covering feeding females.
100% pure neem oil spray:
Thoroughly cover leaf undersides. Repeat in 7–10 days. Ants disappear when mealybugs are gone (no honeydew).
Neem replaces multiple chemicals with one organic solution.
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