My lungs are green from the many pit cleaning sessions I’ve endured.
At Taiso they clean the pit at least once a year, sometimes twice. What a mess!
More photos of this gym cleaning – Warren Long
Tony Smith at University of Calgary finally disposed of his foam cube pit and replaced it with much cleaner covered pits. Good idea.
I understand they are more expensive to install, but possibly cheaper over the long term.
Gymnastics Coaching.com 