Controlling white scale on mango plants involves various methods: 1. Pruning: Remove heavily infested parts of the plant. 2. Natural Predators: Encourage beneficial insects like ladybugs that feed on scales. 3. Horticultural Oils: Apply oils like neem or horticultural oils to suffocate and kill the scales. 4. Soap or Alcohol Solution: Spraying a mixture of soap and water or alcohol can help eradicate them. 5. Systemic Insecticides: Chemical options like insecticidal soaps or systemic insecticides may be used, but cautiously to minimize harm to beneficial insects and the environment. 6. Maintaining Plant Health: Healthy plants are more resistant to pests, so ensure proper watering, nutrition, and care. Caution Always test any treatment on a small area first to ensure it won't harm your mango plant, and consider integrated pest management for long-term control.