| Feature | Soda Crystals | Chemical Drain Cleaner | | :--- | :--- | :--- | | | $0.10 per use | $5–$15 per bottle | | Toxicity | Low (safe for septic tanks) | High (corrosive, poisonous) | | Pipe Safety | Excellent | Poor (can melt PVC joints) | | Odor | None | Toxic, chemical smell | | Effectiveness on grease | Excellent | Excellent | | Effectiveness on hair | Good | Good | | Safety for skin/eyes | Mild irritant | Severe burns |
For grease blockages that have turned into solid wax, mix equal parts soda crystals and table salt (half a cup each). Pour the mixture down, add boiling water, and leave for one hour. Salt acts as an abrasive to scour the pipe walls while soda crystals dissolve the fat. unblock sink soda crystals
If water is not draining at all (standing water), soda crystals usually fail because: | Feature | Soda Crystals | Chemical Drain