What is a major disadvantage of using a dry powder extinguisher indoors?

Using a dry powder extinguisher indoors presents a significant disadvantage because it can obscure vision and potentially cause damage to goods and machinery. When the dry powder is discharged, it creates a thick cloud that can limit visibility, making it challenging for people to see what is happening in the environment, especially in an emergency situation where quick action is necessary. Additionally, the powder can settle on equipment and products, leading to contamination or mechanical issues, which could result in costly damages and additional cleaning or repair efforts.

This aspect is particularly critical in environments where electronics or sensitive machinery are present, as the powder can infiltrate and disrupt operations. Therefore, while dry powder extinguishers are effective for certain types of fires, their use indoors should be considered carefully due to these potential adverse effects.