Saving you $42 - if bought separately.  
 
2x 1KG Sea-Hume Granules (value $56, will cover 10lrg trees)
100gm DiPel caterpillar control (value $25 makes 184ltrs spray)
200ml Naturally Neem insecticide (value $32, makes 10a crucial time when eggs hatch, larvae form, and pests get hungry. It's the perfect time to treat the ground and the tree together for effective pest control0ltr spray)
1x Solar Trapz ($106 lasts basically forever)
 
Autumn is when the eggs hatch, the larvae form, and they get hungry, so it is time to treat the ground and the tree in unison.