My squash plant was covered with whiteflies, and the leaves were starting to turn yellow. So, I searched online for a natural solution, and found a garlic spray recipe on Epic Gardening's website. I cut off all the yellowing leaves, then sprayed it with the garlic spray. The next day, there was a noticeable reduction in the number of whiteflies.
I have to stop expecting immediate results with a take-a-pill or grab-an-insecticide mentality. It does take patience and requires remembering to spray the leaves every day until the pests are gone, but it is working.
Does anyone else have a favorite natural remedy for whiteflies and aphids?