Self-sanitizing toilet seat

A seat for a toilet bowl, the seat having a generally ring-shaped structure with an upper surface for coming into contact with a user, the surface being defined between an external perimeter edge and an internal perimeter edge, the seat comprising and being associated with a multiplicity of spray nozzles for moistening the upper surface with a sanitizing fluid, the seat comprising a passage formed so as to provide a fluid inlet opening along the external perimeter edge and a fluid outlet opening along the internal perimeter edge, the inlet opening being shaped in such a manner as to collect excess fluid flowing over the external edge, whereby the excess fluid is drained away and into the toilet bowl through the passage, the passage being defined by an upper part and a lower part connected to one another in a spaced manner, the lower part being provided with an external perimeter lip bent generally obliquely upward, wherein the upper part is provided with a corresponding external perimeter lip bent generally obliquely in a downward and inward direction, and spaced from the lip on the lower part so as to form the inlet opening of the passage, whereby the excess fluid that adheres to the surface of the external lip of the upper part enters the passage, dropping the external lip of the lower part.