I've worked in a place with those. Over time they build up mould in tiny crevices that are nearly impossible to clean without taking the whole thing apart, whic

I've worked in a place with those. Over time they build up mould in tiny crevices that are nearly impossible to clean without taking the whole thing apart, which is not an easy task. Plus, they blow water drops all over when you use them (put down some strips of water reactive paper... It blows them up to 10 feet away). Not a very healthy technology.