These chemicals are harsh and should be used sparingly to minimize the impact on the local water system. Professional Alternatives
When using commercial products containing sodium hydroxide, it is vital to follow the manufacturer's instructions exactly as printed on the packaging. Generally, the process involves clearing away standing water so the chemical can reach the blockage directly, followed by a careful application and a period of waiting to allow the reaction to occur. Finally, the pipes are typically flushed with water. Risks of DIY Chemical Use caustic soda unblock drain