I have just lawnraked my lawn and there is still moss in the grass is it best to feed the grass first and then use moss killer or use moss killer first
You do not need to aerate or scarify lawns . It is completely unnecessary and a waste of time and effort. Use a mulching mower, ferrous sulphate is the cheapest way to kill moss, fertilise in the spring to replace nutrients washed down into the soil by the winter rain. Do not cut lower than 2" and do not cut in dry weather but allow the grass to get a bit longer. This reduces water loss from the grass and the soil. Thatch in the lawn is part of the natural process of the composting of dead material and it holds moisture and nutrients which are then available for the grass.
Leave the grass cuttings on the lawn to rot down and the worms will aerate the lawn for you. If they leave casts, sweep with a besom broom to scatter them.
The cheapest way to treat moss in a lawn is urine diluted with water,it not only kills the moss but greens the lawn,urine contains ammonia.
Or a weak solution of Jayes Fluid in a watering can,just a spot,dont overdo it.