The trough ones are such a poor design. Carefully try to wiggle your fingers in there, and then they blow with force such that you touch the wet dirty surface t

The trough ones are such a poor design. Carefully try to wiggle your fingers in there, and then they blow with force such that you touch the wet dirty surface that everyone else has touched. I don't understand why these things exist, let alone why people choose to put them in a bathroom.