Which bacteria form spores that can survive in dust and mud?

Bacillus and Clostridium are two genera of bacteria known for their ability to form spores that can survive in harsh environments, including dust and mud. Bacillus species, such as Bacillus anthracis, are commonly found in soil, while Clostridium species, like Clostridium tetani, can also persist in anaerobic conditions. These spores are highly resilient, allowing them to withstand extreme temperatures, desiccation, and other adverse conditions.