Mechanical scarification is the best way to greatly reduce surface thatch and hence the problems it causes. Total Lawns use powerful petrol driven machines to do this, and we always scarify in two directions to maximize thatch removal. Typically we scarify in the late Summer/early Autumn (mid August to mid September). This allows the lawn time to recover and renew itself prior to the onset of Autumn proper and the peak season of moss sporing and germination. If your lawn would benefit from scarification we will let you know well in advance of the treatment season and you can consider your requirements. We can also scarify in late Winter prior to the period of Spring growth and renewal.