The present disclosure provides a method for treating a solid fertilizer. The method comprises contacting the solid fertilizer with an amount of a liquid composition effective for reducing clumping in the fertilizer caused by absorption of water. The liquid composition may comprise one or more organic solvents and/or petroleum distillates. The organic solvents may be selected from the group consisting of glycol, dialkylcarbonate, C1-C4 alcohol, vegetable oil, esters of hydroxyacids, heterocyclic alcohols, cyclic esters of carbonic acid, and esters of dicarboxyacids.
