Remember... the toxic chemicals work after 10 minutes... but they don't necessarily dry after 10 minutes.
Just found out the CDC approved cleaner our gym will be using breaks down into simple saltwater after it has done its job - the whole staff has been trained on its use, and they have enough time for it to work and break down between groups. So that was cool, because I know the toxic chemicals in many cleaners are a concern too. And that info wasn't just from our gym, it was per our friendly neighborhood infectious disease/pandemic response specialist from the fire department, who helped them with their policies.
I also appreciated hearing from them that the main spread was not from contact, and the things they would try to do to increase airflow through the building and space between girls. So many gyms and parents are acting like "we're cleaning everying so it's super safe" and I feel like if you misunderstand the disease's transmission that severely, then I don't trust you to make good decisions WRT prevention. So all in all I think they're doing the most they can.
They did mention briefly that they had been in contact with USAG about best practices, but since the largest number that will be in the gym at one time is about 25/30, and that was "well under" the number/percentage of occupancy USAG gave them....I don't know what USAG is smoking. Technically according to our state+fire marshall, they could open at 25% of occupancy, which is just under 200 people, so...that's insane. It's a small gym.
My kid is in the first group in every day, (which is obscenely early, ugh), and also will only have 8 girls max, so I feel pretty decent, but if she was in one of the larger team groups, I think we'd be sitting out a few more weeks to see how it goes in our city.