to make the STOCK solution NOT TO BE SPRAYED ON PLANTS 1 cup of
vegetable oil 1 tablespoon lemon scented dishwashing liquid of the sort
used to wash by hand NOT the dishwasher machine liquid. 
place both together in a screw top jar with lid and shake thoroughly to 
mix.  Store in the bottom of the fridge.
The insecticide is made as follows take EITHER 1 or 2 teaspoons of the 
stock solution per cup of water in your spray bottle, shake frequently 
and saturate the foliage all sides till it runs off the plant.  Repeat 
as needed in weekly to every 10 days intervals.   
I use the 1 teaspoon strength on all Drosera, Pinguicula and Utricularia 
with out damage to the plants.  
The 2 teaspoon strength can be used on Nepenthes, Sarracenia, 
Heliamphora, Dionaea, Most Drosera, some Pinguicula without damage.
It works by suffocation of the insect and killing of the eggs.  It DOES 
NOT prevent re-infestation and does kill all insects.  If you want to 
juice it up a bit, you can add some malathion, orthene or 
dimethoate(sygon) in the weakest recomended dose as a systemic.  If you 
do this remember to alternate the chemicals that you use or in a very 
short time you could face immunity problems in the insects that you are 
trying to control. 
Also, a q-tip helps immensly when you physically remove the insects on 
the foliage.  If you actually remove the bugs you will be able to tell if 
they re-infest.  
Good luck and Good growing
Andrew