Lawn scarifiers / lawn rakes at Masseys. A lawn scarifier, or lawn rake as they are also known are for the removal of thatch and moss from lawns. Be warned that your grass will not look great for a few weeks after you have use an electric lawn rake or electric lawn scarifier, but the benefits are long term. Our advice would be to use a lawn weed and feed before using an electric lawn scarifier or electric lawn rake. This is because you want to kill the moss before you remove it or it could re-seed itself.