@alex94: Many people are so concerned with keeping insects and other pests off of their lawn, that they don’t even realize that lawn fungus should be of equal concern. During periods of high rainfall, lawn fungus can cripple your lawn and your wallet.
Whereas the best way to deal with lawn fungus is prevention, there are ways to get rid of the horrible fungus once it invades your lawn. There are many different fungicides, many that won’t hurt the pocketbook, that are available.
When using fungicides, you must be careful because while treating the diseased areas, they can also kill good organisms as well. It is a good idea to try to spot treat the problem areas first before they spread without risking killing off the good areas.