Natural insect repellent methods like companion planting -LRB- i.e. planting marigolds or other naturally pest-repelling plants -RRB- become very efficient in a close space and thus , pesticides are not necessary .

Natural insect repellent methods like companion planting -LRB- i.e. planting marigolds or other naturally pest - repelling plants -RRB- become very efficient in a close space so pesticides are not necessary .
