The Waterpik Replacement Pik Pocket Tip Attachment PP-100E is specifically designed to deliver water or anti-bacterial solutions deep into periodontal pockets to clean and reduce pocket depth. The soft rubber tip is designed for gentle, low-pressure delivery of therapeutic rinses below the gumline as prescribed by your dentist or dental professional. It is clinically proven to access 90% of a 6mm pocket. Replace every 3 months for optimum effectiveness.