Method of cleaning drains utilizing halogen-containing oxidizing compound

摘要: Methods of substantially removing a restriction from drain pipe system include the steps introducing cleaning composition containing non-caustic opening active to system, activating by adding sufficient amount liquid while maintaining flow-through state through allowing remain in contact with for time degrade restriction, and rinsing system. The water flow rate is improved at least 0.7 liters/minute after 16 hours contacting restriction. These methods are effective both clogged slow-running drains.