Muaj ntau ntau hom miv litter, ntoo thuv miv litter yog ib qho ntawm lawv, nws yog ib hom miv litter ua los ntawm cov ntoo thuv rov ua dua tshiab thiab cov khoom siv raw li cov ntaub ntawv raw, qhov zoo yog cov dej nqus dej zoo, tsis muaj ntxhiab tsw, lub neej ua haujlwm ntev, yooj yim siv;Txawm li cas los xij, ntoo thuv miv litter kuj muaj qhov tsis zoo ntawm cov ntoo thuv ntoo chips uas muaj qhov cuam tshuam rau cov dej noo thiab yooj yim rau qias neeg lub tsev, thiab tsis yog txhua tus miv nyiam saj ntawm ntoo thuv, ntoo thuv miv litter kuj kim dua, thiab cov shovelers yuav tsum tau xaiv kom zoo.Pine miv litter feem ntau yog siv nrog ob lub thawv khib nyiab.