The present invention relates to a salt comprising an anionic pesticide and a cationic polyamine of the formula (A) or (B) as described in the description. The invention further relates to an agrochemical composition comprising said salt. It also relates to a method for preparing said salt comprising combining the pesticide in its neutral form or as salt, and the polyamine in its neutral form or as salt. In addition, the invention relates to a method of combating harmful insects and/or phytopathogenic fungi. It also relates to a method of controlling undesired vegetation. Finally, the invention relates to seed comprising said salt.
