For subcutaneous, the recommended spot is on the neck - part the fleece, lift the skin, and push the needle into the 'tent' so formed. You should find the skin itself clean and dry, as it's been covered by fleece

You can download the Eblex ''Parasite control guide" booklet from
the sheep literature page. In the booklet they show and describe recommended methods and sites for s/c, i/m injections, drenches and pour-ons