Synero® is a water in oil emulsion containing 30 g/litre (3.5% w/w) aminopyralid (present as 36 g/litre aminopyralid potassium) + 100 g/litre (14.14% w/w) fluroxypyr (present as 144 g/litre fluroxypyr-methyl heptyl ester).

For the control of a wide range of deep-rooted perennial and herbaceous weeds on non-crop land such as motorway and railway embankments, roadsides, grassland of no agricultural interest, and industrial areas (but excluding airfields).