Robert wrote:

Does anyone believe in, or have positive experiencewith, the claims of
products that they include bacteria that eat up the thatch in a lawn (or
grass that you wish would become a lawn :-) and that you no longer need to
mechanically scarify?

There are two products available here in Belgium: DCM Microgazon and
Vilmorin VilmoGazon (gazon is Dutch for lawn).
Do they work?
--
Robert



Never heard of, or used, such products. I am extremely sceptical of
their claims however. No doubt the bacteria they claim to use are
naturally occurring, and if so, they would likely already be present in
the lawn.