I use "Seventh Generation" brand dryer sheets (unscented). Allergic to the scented but a while back I learned to wash the lint filter after I've finished for the day. A soft cloth or old baby's brush run across the filter in (Dawn) soapy water works good. Just run under the water and check to make sure it does. I've found the unscented has less residue. The scented oils/extracts are what clogs the filter. I also use my vacuum hose on my dryer to removed excess lint. I missed the tip on using dryer sheets on string quilts but haven't done a string quilt.