So far online if you try to buy these and choose "horses" it doesnt ask anything however if you choose "cattle" or "sheep" it asks for a herd number etc.
Also Mole valley Farmers are cheaper than hyperdrug £48.43 for box of 20 (£2.42)
PS earlier I wrote Hyperdrug was £2.23/tag...I obviously cant count! Its £65.07 for box of 20 so £3.25 for each tag!
I thought the tags worked in similar way to stuff like FrontLine fleaspray for dogs/cats so it has to be in direct contact with the skin (hence the ear tag on a cow) in order for the stuff to become ingested via the skin into the dog's system. I thought it works from inside the animal out (systemic) rather than it sits on the outside (eg flysheet as a couple of people have said) and gives off a whiff which detracts midges? So plaiting it into a mane or tail would work best if it was plaited tight enough to top of plait that it rested on a patch of (clippered?) skin?
I THINK, I remember a thread on here a while ago........... someone said (think it may have been Alec Swann??? - where are ya Alec??) that they have got to actually TOUCH the horse's coat in order to be effective, and won't be unless they do so.
I seem to recall that they would work if they were say sewn into a headcollar where they actually touched the horse, or inside a rug say, rather than just left to "dangle", as this way the insecticide in them diffuses on to the horse's coat, which then makes them effective.
In the 90s they marketed a version for horses that you slotted into the head collar - can't remember what they were called but they were fab - will definitely have a look at this as couldn't go to hoys this year as horse destroyed his rail boo hoo