Power Raking/ Dethatching is where you use a rake on the grass and pull up all the old dead grass from pass seasons cuts and removing it from the lawn. This process is one of the best thinks you could do to your yard every couple years. (aeration is an alterative service to Dethatching.) Power raking is where by removing the thatch layer it allows the grass to be able to breath get better water absorption in the soils which in turn give the grass a better chance in getting the right amount of nutrients like lime and fertilizer.
This insures that the grass will have a better chance at being greener and more lushes thought-out the year.
A lot of properties have not had a dethatching in a very long time meaning that this process take a long time and can be costly in some cases take days depending on the property and size. By dethatching your yard your less likely to see mosquito then you would if you had a layer of wet dead moisten blanket that they hide in and multiply.
After Dethatching we like to put grass seed down and cover with a thin layer of soil these will make the grass come in fuller and more vibrant