And that's the attitude that led to such wide spread resistance to abamectin.
That and most people are terrible at getting 100% coverage, or start making "light" doses.
Originally Posted by _tessarecting
Essential oils w dr bronners soap as surfactant
1% solution of insecticidal soap (2 tsp per litre)
Bronners may be hard to find in your locale, look for "potassium salts of fatty acids" on local soap brands.
This type of soap mixes poorly with hard water and can burn plants.
0.125% Peppermint oil (1/4tsp per litre)
Spray at lights out/dusk. Test and observe plants for phytotoxicity over a period of 72hrs when using new mixes.
Abamectin works (on contact and with slight residual as it is translaminar), but it is late and you would end up with too much residue in the plant.
Mites are stupid easy to deal with. If contact sprays fail, the fail is yours, not the spray solution.