Pokhapokha ngati patchulidwa mwanjira ina, zinthu zogwiritsidwa ntchito mu tin ingot ziyenera kusungidwa pamalo ouma, ozizira komanso osanyowa. Ndi bwino kugwiritsa ntchito mkati mwa miyezi 12 kuchokera tsiku lopangidwa. tin ingot iyenera kukhalabe mu phukusi lawo loyambirira mpaka nthawi yogwiritsidwa ntchito isanagwiritsidwe ntchito. Zinthu zogwiritsidwa ntchito mu tin ingot ndizoyenera kutumizidwa kudzera m'sitima, sitima, kapena galimoto.