Fig. 2

Representative experiment performed without the foam. The droplets that formed during urination are visible on the paper covering the toilet seat (area 70 × 70 cm), and the surface was divided into four quadrants measuring 35 × 35 cm each (A). The droplets were counted, and coverage was calculated (n. 1386); the percentage of the surface covered by all of the droplets was 1.71% (B). Representative experiment with the foam formulation shows that the foam was able to prevent the mobilization of droplets, and therefore, no drops are present on the paper (C); computation shows that 0% of the surface covered with drops (D).