If you have Cycad or Cycas revoluta in your garden, look out for Blue Butterfly Larvae!!!
If the whole process is too labour intensive then consider replacing your Cycad revoluta with another plant species. The Cardboard Palm (Zamia furfuracea) is a great option as this member of the Cycad family is not affected by the Blue Butterfly and they perform equally as well, providing a lush tropical look or formality to a garden when incorporated well.
Image: Zamia furfuracea