Besides a set of control, 12 different treatments were used as follows: (i) propionic acid (PA); (ii) benzaldehyde (B); (iii) eucalyptus oil (EO); (iv) camphor oil (CO); (v) PA +B (1:1 ratio); (vi) EO +CO (1:1 ratio); (vii) PA + EO (1:1 ratio); (viii) PA + CO (1:1 ratio); (ix) B + EO (1:1 ratio); (x) B + CO (1:1 ratio); (xi) PA+EO+CO (1:1:1 ratio) and (xii) B +EO+CO (1:1:1 ratio)