Once determined that a lawn is in need of dethatching, here are a few tips to give an idea of what is involved. Care must be taken not to try and remove all thatch from a lawn at one time. This will cause more harm than good and can actually kill the grass. Unless, the lawn has extremely heavy thatch buildup, regular aeration treatments would be better.
When to use dethatching – Dethatching is the process or removing Thatch from the lawn. As a general rule of thumb, up to 1/2 inch of thatch is normal. Remember, thatch can be good for lawns, especially during times of drought, water restrictions, and high heat, when it can act like insulation for the soil by providing a screen from sun light and help to hold in moisture.