We take a shower, soup and a myriad of products to clean ourselves. One key capability of biological organisms is inbuilt automation. That includes mechanisms to self cleaning. As for example the Sacred lotus. According to tradition in Asian religions, the sacred lotus is a symbol for purity, ensuing from the same observations that the below article made.
Purity of the sacred lotus, or escape from contamination in biological surfaces
The interdependence between surface roughness, reduced particle adhesion and water repellency is the keystone in the self-cleaning mechanism of many biological surfaces. They perform the so called ‘‘Lotus-Effect’’ which may be of great technological importance. These plants have almost complete self-cleaning ability by water-repellent plant surfaces
The Lotus-Effect is not restricted to plants; indeed, it has an overall biological importance, e.g. for insects. In particular, those insects with large wings, which cannot be cleaned by legs, have water-repellent wing surfaces that exhibit the self-cleaning ability