My mint plant has been growing really well over the past two weeks. However, I see there are holes in the middle of the leaf. Sometimes the outside of the leaf is cut as well. Assuming it was the work of caterpillar, I sprayed caterpillar solution(Safer Brand) twice every week. The rate of holes have gone down but there seems to be new holes coming up every day! Are these the work of spider-mites? I really have no clue.. Please do take a look at the attached pictures. The situation has gone out of hand!