I must say I totally agree - we have now had four visits from them.
They have really turned round our two lawns. On the first visit I
told the guy that I was thinking of digging up our front lawn because
I could not see a blade of grass in all the dandelions and moss and
other weeds - he looked at it and said there was nothing that could
not be fixed!


But it does not solve the problem, as to why you had moss in the first
place. As soon as you stop treating the lawn, the moss will be back.