A peptide comprised of either a binary or a tertiary peptide, the peptide contains at least 4 amino acids and up to a maximum of 16 amino acids, comprised of 2 or 3 different regions, wherein the binary peptides have 2 different regions and the tertiary peptides have 3 different regions; wherein, the peptide can be cleaved by both an animal gut protease and an insect or nematode gut protease.