Authorities in Nigeria say agricultural insecticides, which have been linked to recent cases of people killing themselves, will no longer be sold in shops from September.
Most of these high-strength insecticides can easily be bought in shops and from hawkers.
The National Agency for Food and Drug Administration and Control (Nafdac) has ordered "brand owners/distributors to recall and withdraw their products" from markets and supermarkets.
In a series of measures announced on Twitter, they have also banned "hawking of all agro-chemical formulation" with immediate effect.
These insecticides have become popular for use in households because of their apparent effectiveness in dealing with pests.