In industrial plants, controlling mosquitoes and insects is not about comfort. It is a hygiene and worker-safety requirement, which is why most factories keep a ULV cold fogger or thermal fogging machine as standard equipment.

But one thing is almost never discussed at the point of purchase: the chemical poured into the tank must be compatible with the seals, gaskets, hoses and plastic components inside the machine.

This article tells the true story of a rubber products factory in eastern Thailand that changed chemical to reduce cost and lost two foggers within three months, and explains exactly what happened and how to prevent it.