You need to look and see if the The Fire Extinguisher says BC or ABC.
Each has a different chemical that is used to put out the fire. The BC contains sodium bicarbonate or potassium bicarbonate which can be corrosive if not cleaned quickly the ABC Fire Extinguisher has monoammonium phosphate, which feels sticky.
However dry chemical fire extinguisher is non toxic however can cause skin and eyes irritation and also leads to cough and shortness of breath if a person has respiratory,cardiac problems.
As you have commercial crowded area so it's advised to bring cleanup company.
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