


Does anyone have an idea of what I’m looking at here? Or is testing the only way to know?
Sorry if this is an amateur question but it’s my first time dealing with this, having some health issues (respiratory mainly, possibly psychological but hard to tell there) and started eventually looking around the house to find this in my crawlspace. Any help or advice is greatly appreciated. 🙏🏼
US-MO
Remediation efforts have included spraying with 2 gallons of concrobium while wearing a hazmat suit and p100 full 3M face mask