Human: What is the safest way to clear drain blockages? Assistant: 
The safest way to clear drain blockages is to use an enzyme-based drain cleaner. This type of cleaner is designed to naturally break down any organic compounds that may be causing the blockage. It is also safe for use in pipes and other plumbing components and does not contain harsh chemicals that could damage them. Additionally, boiling hot water can help to dissolve materials that may be causing blockages in some cases.