For persistent pests, physical barriers like fencing and netting are often the most effective solution. A sturdy fence can keep out larger animals like deer and rabbits, while netting can protect plants from birds and insects. Choose materials that are appropriate for the pests you’re dealing with, and ensure the barriers are tall and secure enough to prevent entry. Regularly inspect and maintain these barriers to ensure they remain effective. While this method may require more effort and investment, it provides reliable protection for your garden.