The #1 Rule: Never Use Bleach
This is the most important thing every macerating toilet owner needs to know: chlorine bleach destroys the rubber membrane inside your macerating unit.
The rubber membrane is a thin diaphragm that separates the wastewater from the electrical microswitch. When bleach degrades this membrane, water leaks through and damages the microswitch — leading to the dreaded "won't stop running" problem.
Membrane + microswitch replacement costs approximately $90–$100 in parts. That's an expensive toilet cleaning.
Products to NEVER Use
| Product | Why It's Harmful |
|---|---|
| Chlorine bleach (Clorox, Javex, etc.) | Degrades the rubber membrane, leading to microswitch failure |
| Toilet bowl cleaners with bleach (Lysol Power, Clorox Toilet Bowl) | Same as above — even "mild" bleach formulas damage rubber |
| Caustic drain cleaners (Drano, Liquid-Plumr) | Can damage seals, gaskets, and the macerating blade |
| Abrasive cleaners (Comet, Ajax powder) | Can scratch internal components and damage seals |
| Toilet puck / tank tablets | Continuous chemical exposure degrades rubber and seals over time |
Safe Cleaning Products
For Regular Cleaning (Weekly)
- Mild dish soap and warm water — Simple, effective, and completely safe
- Enzyme-based toilet cleaners — These use biological enzymes to break down waste without harming rubber or seals
- Vinegar (white vinegar) — Safe for occasional use. Not as effective as dedicated descalers but won't harm components
- Dedicated macerator cleaners — Products specifically formulated for macerating toilets
For Descaling (Every 3–6 Months)
Limescale is the enemy of macerating toilets, especially in hard water areas. Regular descaling keeps the motor, blade, and pump running smoothly.Recommended descaling method:
- Flush the toilet to empty the bowl
- Turn OFF the water supply to the toilet
- Pour the recommended amount of descaler into the bowl
- Let it sit for the time specified on the product (typically 1–2 hours)
- Turn the water supply back on
- Flush several times to rinse thoroughly
How often to descale:
- Hard water areas: Every 3 months
- Moderate water: Every 6 months
- Soft water areas: Once a year
The Descaling Schedule
Here's a simple maintenance calendar:
| Task | Frequency | Product |
|---|---|---|
| Regular bowl cleaning | Weekly | Mild soap / enzyme cleaner |
| Descaling treatment | Every 3–6 months | Dedicated macerator descaler |
| Full system inspection | Annually | Visual check of seals, blade, membrane |
| Membrane & microswitch check | Every 2–3 years | Replace proactively if showing wear |
What About Toilet Paper?
Regular toilet paper is perfectly fine in a macerating toilet. However:
- DO use: Standard toilet paper (1-ply or 2-ply)
- DON'T use: Thick luxury toilet paper, wet wipes (even "flushable" ones), paper towels, sanitary products, or excessive amounts of paper in a single flush
Signs Your Cleaning Products Have Already Caused Damage
If you've been using bleach and now notice:
- The unit runs intermittently or won't stop running
- Strange cycling patterns (on-off-on-off)
- Water appears near the microswitch when you open the unit
Your membrane has likely been damaged by the bleach exposure. The fix is to replace both the membrane and microswitch — check our guide on fixing a Saniflo that won't stop running.
Shop Macerator-Safe Products
We carry descalers and cleaning products specifically designed for macerating toilet systems.