Hi @shankor,
It sounds like your herbs and vegetables are under attack from a common garden pest, possibly something like aphids, caterpillars or whiteflies.
A good starting point is using an organic insect spray that's safe for food crops.
Neem Oil is a great all-around option. It disrupts the life cycle of chewing and sucking insects like caterpillars, aphids, and whiteflies. Apply it in the evening to avoid harming bees, and be sure to spray both the tops and undersides of leaves where insects often hide.
If you can identify the insects that are chewing holes in your plants, there may be a more suitable solution, but without knowing the specific insect, this is a good place to start.
Let me know what you think and if you have further questions, please don't hesitate to ask.
Jacob
