Toetra sy tombony:
1. Araka ny fitaovana isan-karazany ho maina, ny mety rotate cylinder rafitra azo voafantina.
2. Fampiasa malefaka sy azo itokisana.
3. Misy loharano hafanana samihafa: entona voajanahary, gazoala, arina, poti-biomass, sns.
4. Fanaraha-maso maripana manan-tsaina.