Separate your wool garments by color, just as you would with other laundry. Divide wools into a load of light-colored garments and a load of dark-colored garments. Separate out bright colors, such as red, from the dark-colored garment pile.
Fill a bucket with undiluted white vinegar. Soak each wool garment in the vinegar for 10 to 15 minutes to set the fabric dye. Rinse with warm water.
Rinse the bucket and fill with warm water and two caps full of mild detergent made for washing wool. Submerge your wool garments in the mild soap solution. Gently agitate them by moving them around in the water. Allow the wool garments to soak for a few minutes to further remove any dirt and stains.
Empty the detergent water out of the bucket and fill it with cool water. Add 1/4 cup white vinegar to the water to help further set the fabric dye in the garment, while also freshening the fibers. Gently dunk the garment in and out of the rinse water to remove all traces of detergent. If necessary, fill the bucket with fresh water until the rinse water remains clear as you rinse the wool garment.
Remove excess moisture from the wool garment by rolling it up in an absorbent towel and pressing on the towel to absorb moisture. Lay the wool garment on a sweater drying rack and gently reshape the garment to maintain its proper shape during the drying process.