... uncomfortable peculiar smell effectively.Features1, Keeps system clean.2, Prevents scale and odors.3, Pleasant cherry fragrance4 ... 3 tons of evaporator to add 1-2 pieces of Pan Pills.2, For reaching the best effect, need ... can every 3 to 6 months add 1-2 pieces of Pan Pills.Humidifier Treatment1, Usually, recommend ... the usage in the hard water quality area.2, For reaching the best effect, can change ...