Border Paste Dip

1928 Advert "BORDER PASTE DIP Back-end dipping Is Important—very important : upon the result depends next year's sheep profits. Users will tell you that BORDER really does destroy ALL the parasites, sterilise the eggs, and assist wool growth."[1]
1945 McDOUGALL'S BORDER PASTE DIP Dilution : 1lb. dip to 6 gallons water. Cooper, McDougall and Robertson Ltd[2]