The title compound, C7H13N3O3S [systematic name: (Z)-methyl 2-di-methyl-amino-N-(methyl-carbamo-yloxy)-2-oxoethanimido-thio-ate], is an oxime carbamate acaride, insecticide and nematicide. The asymmetric unit comprises two independent mol-ecules, A and B. The dihedral angles between the mean planes [r.m.s. deviations = 0.0017 (A) and 0.0016 Å (B)] of the acetamide and oxyimino groups are 88.80 (8)° for A and 87.05 (8)° for B. In the crystal, N/C-H⋯O hydrogen bonds link adjacent mol-ecules, forming chains along the a axis. The chains are further linked by C-H⋯O hydrogen bonds, resulting in a three-dimensional network with alternating rows of A and B mol-ecules in the bc plane stacked along the a-axis direction. The structure was refined as an inversion twin with a final BASF parameter of 0.16 (9).