Yesterday, upon inspecting the plants, I noticed some aphids on the underside of one of the tomato plants. While I have seen one ladybug around a week ago, I haven't seen another one or that one since. So I don't think I can rely on them for help.

What would you suggest for combating the aphids in a small garden such as mine? I read about making a tomato leaf spray which seems easy enough, but does it work?

Any suggestions are welcomed.

Thanks, Veronica