Most people simply dump crystals down the drain and pour water over them. This is the "okay" method. The involves an acid-base reaction:
Keep a dedicated container of soda crystals under your kitchen sink next to the dish soap. When you notice the water starting to drain slowly, you’ll be ready to act immediately—before a slow drain becomes a no-drain emergency. unblock sink soda crystals
If water is not draining at all (standing water), soda crystals usually fail because: Most people simply dump crystals down the drain
Do not run the tap. Do not use the sink. Let the mixture sit for . During this time, a chemical reaction is occurring. You may hear a fizzing or crackling sound, or see bubbles rising back up. That is the sound of victory—the crystals are breaking down grease and organic sludge. When you notice the water starting to drain
After 20 minutes, run the hot tap at full pressure for two minutes. The water should now drain freely. If it’s still slow, repeat the process.