Drainage, pasina mubvunzo, chinhu chakakosha cheimba imwe neimwe. Asi, zvinosuruvarisa, kazhinji kudhonza kuve neye isiri yekutanga kutarisa uye inogona kutopamba kutaridzika kwechivako.
Nhasi, vagari havasi vega vega, asiwo zvivakwa zvefurati zvakatanga kushandura madhiri kuti ave mabasa chaiwo emugwagwa. Drainfly ine dhizaini, yakaputsika drain kana kunyange kunyudza ruva reruva: Heano mamwe emamwe mafungiro ekugadzira ekugadzira zvinhu izvi zvisingabvumirwe.
