Correctly identify the pest, as biological controls are specific to the pest they deal with.
Introduce biological controls as soon as the first pests are seen, temperatures are warm enough and light levels are suitable.
Keep pest populations down by using soft soap if temperatures are too low to introduce biological controls. Use biological controls according to the instructions. With the exception of Nematodes, which can be kept in a fridge at 5C for a short time, biological controls should be used on the day of receipt.
Remember to be patient, biological controls must establish themselves and build up in numbers before they start to reduce the pest population. This may take a few weeks.
DO NOT spray the area to be treated with persistent pesticides, chemicals leave residues which can harm biological controls! As a general rule stop using Derris 1-2 weeks before, Pyrethrum 4 days before and soft soap insecticides 1 day before releasing biological controls.