Purex Crystals Is An In-Wash Fragrance Booster, Which Provides Freshness That Lasts For Weeks. Use A Little Or A Lot, Directly In The Laundry!10Add Purex Crystals To The Start Of The Wash Cycle With Detergent. It Spends More Time With Your Laundry Injecting It With A Fresh Scent That Lasts For Weeks, Not Days10Safe For All Loads Including Towels, Active Wear, And Children'S Sleepwear10Capture The Exhilarating Moment Of A Crisp, Fresh Breeze And Give Your Laundry Long-Lasting, Just-Washed Freshness With The Fresh Mountain Breeze Scent10Includes Four 15.5-Ounce Bottles Of In-Wash Fragrance Booster