Over the last decade, buying thermal foggers and ULV cold foggers online has become extremely easy. There are hundreds of listings, and prices for machines that look almost identical can differ fivefold.

For smaller buyers — dormitory owners, small restaurants, houses with gardens — that price gap looks like an opportunity, because the specifications written on the listings look similar too.

What the listing never tells you is what happens in month four, when the first component fails. This article is the true story of a dormitory owner who bought twice before he understood that.