fmullegun, apparently nobody knows the answer to this. I would have thought TexasWeed would have had an idea, but I guess not. This has been posted for a week now. Did you use it and have you seen any response from the grass? I would expect they have it formulated to release some nitrogen quickly but then the coating will make the rest of the nitrogen a 'slow release' type. What type of grass are you growing? I am guessing bermuda, because of the high N value of the fert you chose, or possibly St Augustine only because you are in Texas.

Way back when, I used to use chemical fertilizers. I tried the coated version but the lawn looked awful. Now granted, I really was a novice, but I would have expected something.

From what I understand, urea is a bi-product of the bovine industry. It is basically, two ammonia molecules bonded together and is not usable by plants. When it gets wet, it breaks down into ammonia and dissolves into the water. If it is picked up by soil bacteria it can be transformed into nitrate (this is what you want, plants can use this). If you have no or low bacteria in your soil, it washes away, wasted.
From what I understand, un-coated urea can wash away in one rainfall. It is very poor quality fertilizer if you ask me; it has pleased the liberal tree huggers by avoiding nitrate runoff.

Let me add this too, urea fertilizer is organic, its cow pee, and should not be confused with "chemical" fertilizers. I would say 99% of the fertilizers at your box store are urea based. If your urea fertilizer has herbicides mixed in, then they are not considered organic.

The urea you buy in the store as fertilizer is chemically the same as what is in urine, but it's synthesized from petrochemicals.

bp is right. Urea fertilizer could not be more synthetic. It would be a nice thought to have livestock produce urea, but as of now, they do not have diapers for cattle. If you want to read more about how urea is synthesized, you can read about it here, but we're veering off topic.