Ko te kiri tāpae i mua he mea matua mō te tāranga matua i te rorohiko, e whakamātautau ana i ngā raru o te whakauru i ngā inki hou me ngā wāhi tāranga. Ko ngā whakamātautau pūkaha tonu hei whakamātautau mō te whakauru pūkaha ki ngā wāhi he iti te pūhanga o te pūngao, ā, he whakamātautau nui i ngā whakamātautau whānui me ngā whakamātautau i roto i te whare. Ko ngā kiri tāpae i mua o tātou he pai rawa i te whakamātautau i ngā āhua, e aki ana i te kōwhaiwhai, i te whakamātautau rānei i muri i te whakauru. Ka tiaki i ngā kiri i te whakamātautau o te UV, ā, he pai mō te whakamātautau roa i roto i te whare, me te whakamātautau poto i waho i te whare. I hangaia i tēnei wāhi hanga pūkaha, ā, e whakamana ana i ngā whakamauritanga o te ao mō te haumātua me te mahinga. Ko te whānui o te kiri e whakamātautau ana mai i te 15μm ki te 30μm hei whakamātautau mō ngā hāngā rerekē o te whakamātautau. I tautāia e tēnei rōpū ratonga pūkaha, ka tuku ā-tātātanga i ngā whakamātautau me ngā whakamātautau. Mō te kiri tāpae i mua he iti ngā utu, he pūkaha, whakapā mai ki tātou i tēnei rōpū hokohoko.