You can either use J cloths for this or old t shirts or rags as long as they are clean.
You will need: Jar with a lid, 1/2 cup white vinegar, 8 drops of essential oils, cloths.
Cut cloths into smaller pieces. Mix in vinegar and oil in a small bowl. Pour the mixture over the cloths until they are damp. Store in a jar. When you have used them in the tumble dryer, keep them to one side and remake them all when you are ready. It’s better than having the shop bought ones getting stuck in the filter.