So I'm noticing aphids crawling on the pots and trays of my plants, but not exactly on the plants. I've been squishing the ones I see with my fingers, but every day I keep finding more and I'm wondering couple things:
1. Where do they keep coming from? I know that they lay a bunch of eggs, but I can't see to find the source since none are affecting any of my plants.
2. Is it normal for them just to be crawling around my plants but not so into my plants?