A lawn dethatcher is also referred to as a power rake, a lawn sweeper, a thatching machine, or a dethatching rake. All of these have the same purpose, which is to remove undesired thatch out of your lawn.
Thatch is another all encompassing word which essentially means any unwanted material in your lawn such as dead grasses and mosses. It can also refer to dead sod, undesirable grasses and creeping lawn weeds. It takes the longest to dethatch thick moss and dead sod. Lawns with really thick moss may need to be dethatched several times.
A lawn dethatcher machine usually does a better job than a lawn mower dethatching blade and is a lot less time consuming then a dethatching rake. A lawn dethatcher machine works by having 4 sets of raking blade spinning vertically and hitting the surface of the ground at a perpendicular angle. The pulley on the engine spins the blades. It works like a brush combing snarls and thatch out of the lawn, but leaving the grass in place. Any good dethatcher will have a level that can engage and disengage the spinning blades.
The benefit of removing thatch with a lawn dethatcher is that it can improve the overall look and health of the lawn. Weeds and moss that choke the lawn off from water and sunlight can be eliminated.
Most rental shops rent lawn dethatchers. They rent for to depending on where you rent and the length of the rental. You may need to ask for a power rake or lawn sweeper but don't worry they are the same thing. It is just that every brand calls it their own name. If you do it your self be careful with going over roots, rocks and sprinkler heads. A lawn dethacther is about the size of a lawnmower, only is about twice as heavy and as powerful.
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