 That's where ZAMZO's Pen-A-Turf works miracles and breaks up heavy clay and compacted soil, allowing air and water to go vertical. In fact, the W in lawn stands for water, and every plant needs it, but in the right amount. The last letter in lawn stands for nutrients, which ZAMZO's lawn food and ZAMZO's Humigreen are designed to supply while at the same time improving the soil. So the answer to the question, what can I do about my lawn, is simple.