He mea whakamahia ngā ngauwhara i roto i te whare hokohoko hei whakahōhonu i ngā momo āhuatanga o te wai. Heoi, he ngauwhara ringa, ngauwhara matihiko rānei, ā, ngauwhara tino whakarerekē nō ngā motu katoa e kitea ana i te paerangi. Kua mōhio ko ngā ngauwhara ringa e mahi nei i a rātou i runga i te ringa, ko te mea nui he waimarie, he whakaheke noa. He pūtonga i roto i ngā ngauwhara matihiko e āwhina ana ki te tatau me te pai rawa, inaianei kei te whakatakoto i ngā mahi whakaputa e nui ana i te wā. Ki te wāhia atu, he wāhia noa ngā ngauwhara tino whakarerekē, ka whakaae ai ngā whakamahi ki te whakarite i te rahi kia taea te whakawhiti i a rātou i runga i ō rātou hiahia, ko tēnā ka whai take nui i roto i ngā whare hokohoko.