Use a toothpick to get rid of all the balls in the toothbrush, clean it, and you can continue to use it next time. It's very affordable. However, this method is not recommended for woolen coats, so as not to affect the beauty and quality of clothes. Rubber gloves can be used to wash clothes and dishes. Fix the sweater, put on gloves, and then rub it hard on the sweater. Repeatedly, all the hairballs will be removed by gloves. If there are no hairballs on the gloves, you can look at the clothes carefully. It is possible that the hair balls have gathered in a certain part of the clothes, and after finding the right position, they will all come down with a little hard pull.