The answer to 'what do fumigation look like' is that fumigation involves sealing a home or building and releasing a toxic gas to eliminate pests like termites, bedbugs, or rodents. During the fumigation process, the building is tented or covered with a large, gas-tight tarp to contain the poisonous fumes. The tarp is typically a bright, opaque color like blue or orange to make the fumigation visible and warn people to stay away.
The fumigation gas, usually a chemical like sulfuryl fluoride or methyl bromide, is then released into the sealed space and left to circulate and penetrate all areas for several hours or days. This allows the gas to reach and kill any pests hiding in walls, floors, or other hard-to-reach places. After the treatment is complete, the building is thoroughly ventilated to remove any remaining fumes before it can be safely reoccupied.