A simple soil test will help you determine the health of your soil. What you're looking for is a neutral pH of 7, but if the results come back acidic, you'll need to amend the soil for maximum nutrient availability. Here's where a natural cure like epsom salt comes in handy. Despite its name, it is not actually salt, but rather a sulfate and magnesium compound—and it’s also a natural deterrent for pests. Apply with a lawn spreader or dilute in water to apply in a garden sprayer for a healthier lawn.