I have Bermuda grass.
I want to "top dress" our yard this year.
I got some quotes from few landscapers.
Most use dillo dirt while one uses "organic compost."
Here are my questions.

1. What is dillo dirt?

2. Which is better for my yard - dillo dirt or organic compost?

3. How much (thickness) is enough for each material? Is 1/2" of dillo dirt
sufficient, or do I need full 1"?

4. Any good/honest INEXPENSIVE dillo dirt or organic compost business you
can recommend in NW Austin (183 & Anderson Mill)?

5. Are they worth the money? Do they really help?