Here's what I do to get aphids from my rose bushes (no Chiles planted yet, but will start soon, I hope!). I use the contents of many an ashtray. Put all the butts in a 5 litre bottle and fill it with water. Let it soak and ferment for about a week. I just don't look at it, it's somewhat yecchy... I water the plants with the filtered result (a repulsive brown liquid). The tar and nicotine in the water go up through the roots, and it seems the aphids don't like the taste of the savia at all. No insects are killed. No chemicals are used. One drawback is I don't know if the fruits develop a tobacco taste... I don't eat my roses. Still, the flowers don't smell funny, anyway. As soon as I have my Chile plants, and if I have any problem with aphids, I'll experiment with this liquid. Then I'll see and I'll tell. Gerardo