The Fond du lac County UW Extension Office is holding a Clean Sweep of hazardous chemical waste Saturday. The collection of household and agricultural chemical waste is open to all county residents, farms, schools and businesses. The fee is five dollars per vehicle. The event will be held from 9am to noon at the Fond du Lac County Fairgrounds Expo building. A list of items that will be accepted is available on the Fond du Lac County extension office website.