Honeycombs get dirty, in fact they get filthy and they're really hard to clean. I took another shot at it today and had quite a reasonable success. While I must concede that the number one ingredient is elbow grease I certainly found that this BBQ cleaning tool was very useful too. I took a bowl full of warm water with a bit of diluted Krud Kutter and gave the whole thing a good scrub. The results speak for themselves. The BBQ brush ended up a little bit worn out but they're only a £1 from Asda at the moment and I suspect at the end of BBQ season they'll be a lot cheaper.