If your lawn trim is completed, but the lawn still give a person messy feeling, in most cases is blade is dull. Blunt blade on the lawn of the destructive is very great. Because avulsed of grass than tidy slit of grass injured wound bigger, bacteria are very easy to intrusion, therefore blunt force after grass is often make lawn become white gray, after a day or two into coke yellow, not timely treatment often cause huge necrosis.
Blade must every ten days grinding time, cutter blade can every three months a grinding. If of grass texture tenacity, the blade period should also be shorten, our country should be based on the lawn, each using a week a knife.