Ki te piki i te whakawhiti kiriwhero i ngā kōwhai, ka hangaia ngā wāhanga plastikī i runga i ngā kiriwhero kē kia tohu ngā whakamahi kē. Nā ngā kōwhai matapihi i te poliēsita pai rawa he pai hei whakamahi mō ngā tikanga rongoā me ngā kōwhai rorohiko, nā reira he iti whenuaka me te wāhi tino haea kei te whakamahi. Ki te tae atu ki ngā paerewa tuatahi, he mea hanga ngā kōwhai whakamutunga i ngā momo katoa me ngā āhua katoa hei whakapai i te nohotanga me te haumanu. Mōhio mātou i ngā hiahia kē a ō mātau mātauranga o te ao, ā, ka hanga mātou i ā rātau mahi kia tika ai ki ngā paerewa whakahaere pai rawa kua takeke nei i te wāhi.