Asbestos gas is not truly a gas; rather it is a combination of air and the very fine, invisible particles of asbestos that have entered the air. Since airborne asbestos is the most dangerous type of exposure it is essential to limit any contact with asbestos in this form. Typically demolition of older buildings, renovation, working on a vehicle or replacing older types of insulation are the most common forms of exposure to asbestos gas or asbestos particles in the air for the average person. Several options can be used to minimize the likelihood of the microscopic particles getting into the air. The first is to wet or saturate the building or area with water, preventing even the tiny particles from getting into the air. Other options include using high powered vacuums to remove both the air and the asbestos fibers from the environment, filtering even the most microscopic fibers from the air before blowing it out the other side. These vacuums are specially designed with asbestos filters and are most commonly used in brake shops, mechanical garages and in manufacturing industries.