Dispenser having a reservoir comprising a porous material

摘要

A dispenser is disclosed. The dispenser comprises a shell having an opening; means for attaching the dispenser to an animal; a reservoir disposed in the shell comprising a porous material containing a liquid substance; and a wick having a first portion in direct contact with the porous material and a second portion positioned adjacent the opening. The wick is in fluid communication with the reservoir. The wick has a greater capillary attraction than the reservoir whereby during use of the dispenser the wick draws the liquid substance from the reservoir through the first portion of the wick and the second portion of the wick deposits the liquid substance on an animal upon contact. Substantially all payout of the liquid substance from the reservoir is delivered by wicking action of the wick and through the opening.