Pesticide formulations having physical mode of action

A water emulsifiable or soluble pesticidal composition comprising at least one trisiloxane surfactant and having a physical pesticidal mode of action, the composition comprising:

• a. at least one trisiloxane surfactant having Formula (I):
• wherein
• R is —(CH2)3—(OCH2CH2)nOR1;
• R1 is —H, —CH3, or —O(O)CCH3;
• and
• n is 2 to 20.
• b. a gel matrix-forming agent in a form of at least one of a silicon alkoxide or titanium alkoxide sol-gel precursor,
• wherein the relative amount by weight of the at least one trisiloxane surfactant to the at least one silicon alkoxide or titanium alkoxide sol-gel precursor is at least 18:1;
• and
• wherein the composition forms a lasting gel matrix when applied to a surface of a pest;
• and
• wherein the trisiloxane surfactant enhances the spreading of the composition on the surface of the pest, and the physical pesticidal mode of action comprises the composition spreading over the surface of the pest and forming the lasting gel matrix thereon.