Name, age and/or size of plant ***Grass is 20 years old When was the problem was first noted ***Last spring What part of the plant is affected? ***Large patches where grass is disappearing. Have symptoms progressed or changed? ****Last year I put down grub control and lime and it seems to stop for a while, but it is back this year. Growing conditions (full sun, part shade, shade, windy, salt spray, etc.) ****Morning full sun. Soil problems (compacted soil, construction activity, poor drainage) ****There is a lot of clay under the grass, but no one else in the neighborhood has the problem we do Pesticide and fertilizer applications ****Only what I mentioned above Photos (jpg, png, or gif files, maximum size of 5MB each and in focus) are very helpful! Include an object (ruler/coin) to indicate scale, especially important for insect ID.