Yes, but it depends on the content previously placed in the bag. Bags that previously contained fruit, vegetables, bread of dry items can be washed and re-used. Bags that contained meat, fish, raw egg or unpasteurised cheese should be thrown out after use, as they could contain invisible bacteria which would remain after washing. MAGIC VAC® bas can be hand-washed or else washed in the upper dishwasher rack. Use a wooden clothes pin or paper clip to hold the bags in place. Completely dry before re-use.