Oresanya said it was discovered during the visits that accumulated fats, oils and grease and other food materials in confined chambers were not scooped daily, thus allowing their breakdown by microbes which releases toxic waste.

Source: https://pmnewsnigeria.com/2023/05/15/poor-hygiene-ogun-threatens-to-shut-down-eateries-fast-food-outlets-in-7-days/