Scarifying the lawn
My lawn is full of moss. I have treated it but the spreader wasn't working properly so it is not very even and blackened in places. I want to scarify and aerate it and may have to give it another treatment so called in one of the companies who do those things and got quotes. They left me a booklet to read which said that the small domestic scarifiers (electric wire rake), like the Black and Decker one I own and was thinking of getting my young helper to use, can cause severe long-term damage and split the stolon of the grass, allowing diseases into the plant.
Is there any truth in this? I have no idea what diseased grass looks like but I have certainly got a lot of moss out with mine in the past.