Working in pest control, I get a lot of random questions from friends – and I got one the other day that got me thinking – why do roaches turn upside down when they’re dying? I thought to myself, well that’s super random but actually one of those questions you always wonder about but never think to ask.
The chemicals we use to treat roaches kills them from the inside out by paralyzing and drying them out. The body of a roach is top heavy with a rounded greasy back, and longer legs. So when they come in contact with chemicals, it begins to work from the inside starting to paralyze and dry out their body, causing them to lose function of their legs and flip over onto their back.
A healthy roach can usually work itself back over or use something to help flip itself but one that is dying can not. Also, surfaces in homes are all usually smooth, so there is nothing the roach can use to turn itself back over. Out in nature, roaches can use blades of grass, trees, branches, etc to help turn themselves over.
Now you have a random trivia fact to share with friends, they probably won’t want to hear it but at least now you know.