How can I effectively control and manage a scale insect infestation in my garden?

To effectively control and manage a scale insect infestation in your garden, you can try using natural predators like ladybugs or lacewings, pruning heavily infested plants, applying horticultural oil or insecticidal soap, and regularly inspecting your plants for signs of infestation. It's important to act promptly and consistently to prevent the infestation from spreading.