The toxicity of seven acaricides (abamectin,  amitraz, azocyclotin, fenbutatin  oxide, propargite, pyrimidifin and spirodiclofen)  to  Tetranychus urticae Koch, Panonychus ulmi Koch (Acari:  Tetranychidae) and the  predatory phytoseiid mites (Neoseiulus  fallacis  German and  Typhlodromus cotoneastri  Wainstein) was evaluated in  both laboratory and apple orchards in two different sites on the Syrian Coast (Shakrieh- Lattakia and Premmant El-Masheik-Tartous). All tested acaricides were highly toxic to  T.urticae and P.ulmi, except spirodiclofen, which was slightly to moderately toxic after lday, and moderately to highly toxic after 7 days in field. For the phytoseiid mites; amitraz, azocyclotin and pyrimidifin were highly toxic  in  laboratory  and field,  abamectin was moderately toxic  in  both laboratory  and field,  fenbutatin  oxide was moderately toxic  in  laboratory  and non-toxic in  field,  propargite was moderately toxic in laboratory and slightly toxic in field, and spirodiclofen was slightly toxic in laboratory and non toxic in field.