When this news first came out, I tried practically all the alternatives. My personal experiences:<p>Wadded up aluminum foil: really does not work well. It gets loose grime off, but anything at all burnt on will take very vigorous scrubbing and possibly result in shredded foil everywhere. Also feels like a huge waste of foil.<p>Wooden scraper: works ok, since it's not flexible doesn't get between the slats well, need to put a lot of elbow grease in to get stuck-on stuff, and if you leave it outside
in my high humidity region - even under a cover - it will get disgusting fast<p>Abrasive pads/steel wool - work surprisingly well, but need to be replaced constantly and it's fairly disgusting work (you will feel like you need a shower afterwards) because you are basically in the grill<p>Nylon brush - did literally nothing.<p>The solution I'm currently on is a wire brush that is continuous spirals of wire rather than bristles. Available from your preferred online merchant, etc. Does not work nearly as well as a traditional wire brush: have to use quite a bit more force, and very awkward to maneuver it between the slats. That said, it gets the job done very well and it's durable.