Yes. You should rake your dead grass for multiple reasons. • Your dead grass may just be dead thatch. Removing the dead thatch (dethatching) will allow air, nutrients, and water to reach your healthy lawn. • Raking may reveal that not all your grass is dead. You may just need to seed parts of your lawn instead of replacing entire sections. • Warning: Don’t rake too much. If you do have healthy grass within the dead turf, you risk damaging the delicate blades with over raking.