I had to clean out the jar my genic sling lives in recently because it grew some white mold while I was away. I got rid of the substrate, scrubbed the jar with soap, and put in fresh, newly-moistened sub. A couple days later, the mold was back! While I was temporarily rehousing the sling in a vial so I could do the cleaning, some of the old sub got into the vial, too, and though I tried to take most of it out, I think a few particles made it back into the jar after I returned the sling. Could that be why I'm seeing mold again so soon?