I have been using a wooden one for the last year. It's about 18" x 5" x 1/2", has a oar-like handle carved in one end, and a taper in the other. I think it's made of cedar. It starts to get groves from the grill as you use it, but even without those it is effective, you just have to angle it to get stuff off the sides of each rung/wire (whatever those are called). Compared to a bristled brush it usually only takes one pass.