G'Day Guys Would you believe I use good old Water! Rain water is even better; use it with one of those squeegees thingys you use at the auto petrol station. Seems to work pretty good, might not last as long as the above ideas but it seems to work nice for us. We also take the front top cover off the feeder house to help with material build up under the cab and if you have lots of dust coming out the front feeder you need to look at setup issues in the rest of machine! Rolf