So the vet gave me the wrong thing....according to the "goaty" vet in the practice - Dectomax will not get rid of external parasites...
So today a 3 hour stint catching each kid, finding any ticks and removing, spraying with blue spray and giving antibiotic if the bite is swollen. Scabs too (possibly ex-tick bites) got the blue spray. Plus 5ml Spot on.
Next year I'm going to keep up with Spot on through the summer and autumn as we are in the ideal place for ticks and mites.
We learnt 2 new goat-catching and restraining tricks though - first when penning them, make the pen smaller once they are caught so they can't really move - no more rodeo moves to catch them, it also stops them bashing each other! And - when caught, one person hold the 2 front legs and the other the 2 back legs and lower onto side, then after initial kicking, put hand gently over eyes - and they just zone out!