Talking about un-wanted visitors to our composting bins... Here is why HOTBIN developed and added an integrated Charcoal-Filter to all its models, and How it Works.
More on the Charcoal Filter
It is normal for the charcoal filter bag to be damp, as the water vapor produced inside, passes through it before exiting through the valve. However, this moisture, will not restrict airflow or cause a loss of internal temperature.
The answer is NO. The charcoal-filter is an integral part of HOTBIN's operating and composting process and it should not be removed unless directed to do so by the HOTBIN team.