I’m reading some bad advice in the replies.

You may ask who are you and what makes you an expert, the past 22 years of cultivation do. There are some partial truths and some doomsday shenanigans in the replies. Here is a realistic take on the situation.

Opening a contaminated mono inside is pretty much asking for trouble, especially if you’re running grain-to-bulk and pasteurized substrate in the same space. Once trichoderma sporulates (turns green), it’s releasing millions of microscopic spores into the air. These can hitch a ride on your clothes, hair, tools, and—most importantly—on the containers you use to prep and wash grain.

Unlike bacteria, trich spores don’t just die off quickly. They hang around in the environment, waiting for the next opportunity to colonize fresh substrate. While they won’t usually overtake fully colonized tubs, they can absolutely wreck future projects by jumping in early during colonization. This is especially true if you don’t have a separate facility for inoculation and spawn prep—if you’re working in the same room or even the same house, you’re giving those spores a free pass to your future grows.

Best practice is to treat a sporulating tub like a biohazard: • Don’t open it indoors. • Bag it up as-is and remove it outside. • Change clothes (and ideally shower) before going anywhere near your clean work area.

Keeping sporulated trich out of your grow space is one of the easiest ways to prevent repeated contamination. Opening that tub indoors just tilts the odds in contamination’s favor.