Using a power thatcher might sound intimidating—but it’s actually one of the easiest lawn upgrades you can do . Here’s a simple, no-stress way to get it done: Using a power thatcher might sound intimidating—but it’s actually one of the easiest lawn upgrades you can do . Here’s a simple, no-stress way to get it done: Step-by-Step (Simple & Fast) 1. Mow Your Lawn First Cut your grass down to about 1.5–2 inches . This lets the thatcher reach the thatch layer more effectively. 2.