Headfly control alternative to spot on

[andybk]

turning some rams onto another field and can be a pain with flies when it warms up , Is there an alternative to spot on for head fly control (downland ?) , does it work the same ?, spoiled a few good rams last spring had a few cone heads (infected) that never came right most of summer

 

[neilo]

Spotinor is the same product, but only a bit cheaper iirc.