CompoCloset™ Troubleshooting Guide

CompoCloset™ systems are easy to manage, and most issues can be remedied with ease by the user themselves. 

Foul odours

Occasionally, a CompoCloset™ composting toilet may have the scent of humus (earthy), but it should never smell bad.

If you are experiencing foul odours, ensure that your fan is working and check the ventilation system for blockages. If the fan has failed, you will need a replacement.

If you're operating with the carbon filter and no external ventilation, it may be time to replace the carbon pellet inside the internal filter.

Tip: Keep a spray bottle of Nature Flush Enzymes (a universal cleaner and compost treatment) next to the toilet and spray the urinal and chamber-screen after each use to prevent odours from materials that may be left on these surfaces.

Solids chamber fills too quickly

The only materials that should be going into your composting toilet are human excreta, and bulking agent. Never put any other materials inside the system, no matter how organic they may seem.

If the solids chamber of your composting toilet is filling up too fast, re-evaluate the amount of bulking agent that you are adding. The goal is to add enough bulking agent to create the right composting mixture, without filling the solids chamber too much.

Additionally, consider placing toilet paper into a separate receptacle to further off-load the solids chamber, as toilet paper can be bulky. If your composting toilet has an agitator, it is recommended that you don't put toilet paper into the solids chamber at all, as this can wrap around the agitator. 

Tip: WCTNZ® recommends trying recycled toilet paper for its solubility.

Liquids chamber is overflowing

Make sure to empty the liquids chamber as soon as you see the LED light come on—this indicates a "full" status. If your LED light isn't working, you may need a new 9-volt battery.

Condensation inside the composting toilet

If you CompoCloset™ composting toilet is installed without an external vent, condensation can occur as the air reticulates within the unit. While condensation is not necessarily a bad thing, too much moisture can throw off the compost off-balance, resulting in foul odours and inefficient decomposition. Use a soft cloth or a paper towel to wipe the condensation away. 

Fly strike

Add a layer of diatomaceous earth to the compost chamber to stop the flies' breeding cycle. Spray the compost with an organic fly deterrent such as Bambooloo™ Tamper Spray (insect deterrent and compost treatment).

Other issues

Didn't find what you were looking for? Email your support query to support@wctnz.co.nz and we will address it within 48 working hours. In order to expedite the process, please include the following in your email:

• your WCTNZ® Order Number
• your CompoCloset™ System Number
• description of your issue
• photos of your issue

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