Patent ID: 7264845

Claim:
A method for increasing the hydrophobicity of at least parts of a lavatory bowl surface comprising the steps of repeatedly applying to at least parts of said lavatory bowl surface a solution comprising a surface modifying polymer, the surface modifying polymer being included in an amount of less than 30 ppm, to provide a contact angle between water and at least parts of said surface after at least 10 applications and up to 120 applications that is at least 5° higher as compared to the contact angle of said surface treated with water alone and does not exceed a contact angle of 55° and wherein said solution additionally comprises a chelant selected from the group consisting of phosphonate chelants, amino carboxylate chelants, other carboxylate chelants, polyfunctionally-substituted aromatic chelants, ethylenediamine N,N′-disuccinic acids, and mixtures thereof, and wherein said surface modifying polymer is a silicone polymer.