Here is a good tip for cleaning the grill:

We have a NG Weber. After we finish with what we are grilling, we cover the grill with aluminum foil crank everything to high and close the grill. Wait about 10-12 minutes, come back turn everything off and throw the foil in the garbarge. Just scrape the remains with your simple brush. It works wonders!

I don't do this everytime I grill. Maybe once every 2-3 weeks depending on your use.

Enjoy!