We had several problems with the MSR stove for a long time. We always though bezine is clean but it is not, especially in Africa. Based on the feedback by MSR below we now use old baby wipes.How? We cut off a plastic bottle and put 10 of these baby wipes into the small top of the bottle. Then put the top of the bottle on top of your bezine bottle and put the benzine throught the baby wipes into the bottle.