| Agent | Mechanism | Effective on | Caution | |--------|-----------|---------------|---------| | | Dissolves alkaline salts | Struvite, calcium phosphate | Corrosive; rinse thoroughly | | Citric acid (10–15% solution) | Chelates calcium + lowers pH | All types, especially struvite | Biodegradable, safer for pipes | | Sulfamic acid | Strong descaling | Calcium-based crystals | Avoid mixing with bleach | | Enzymatic urinal treatments | Breaks biofilm + urea | Prevention, mild dissolution | Slower, better for maintenance |
When urine crystals have calcified into "struvite" (ammonium magnesium phosphate), they require low-pH solutions to dissolve. Commercial Descalers : Products like Crete Heavy Duty Descaler
Urine crystals are alkaline (high pH). Most commercial bathroom cleaners are either neutral or alkaline, which is why they fail. To dissolve urine crystals, you need an acidic solution.
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