a contradeglutitious solid herbicidal composition comprising a 1 , 1 &# 39 ;- dimethyl - 4 , 4 &# 39 ;- bipyridylium salt in a substantially solid state and a thickening agent and , optionally , a water absorbable inorganic fine powder . this composition is difficult to swallow in its original form or even when diluted in a glass of water . the composition does not impair the inherent herbicidal effects and applicability of paraquat .