First time posting - thank you all Redditors! Live in Midwest - after a good rain, water will set in back yard - city run-off ditches are not dug to proper depths and water runs down two properties to my backyard. I did pay for a sump pump system to improve moisture level in my basement.

There is a hole in the basement floor, and a drain from the hvac leads to this hole. I have had issues in this area previously, and during that time, I felt I may fall asleep and never wake up. Well, I didn’t realize at the time, there was mold growing on some spare drywall I had placed there for storage. I removed that drywall and sprayed a vinegar and bleach concoction all over the area where the drywall was resting.

Then, I had a brilliant idea - stuff an old pair of undies in this hole, not allowing any “air to escape.”

I am attaching photos of the area, and the mold I found on my undies, which were stuffed in the hole.

I have another camera which can fit in the hole…I will return with more images from what is inside the hole.

What can I do with reoccurring mold in this area? I had three “mold cleaning companies” give estimates, after an expert told me that there is likely a mold issue - lowest estimate was over $10k!!?

I have tried to remove all of the mold concerns on my own, by myself…yet, it keeps returning. And I am usually sick before I realize - it’s the mold again.

My “air quality expert” who recommended the three removal-cleaning companies says that I need to make certain improvements before she will test the air quality in my home. I’m in year two and she still won’t test the air to see what is the actual problem.

Open to questions for adding details.