When should a mask be worn during pest control be replaced

1. Smell, or allergies

2. A special mark indicates the end of the validity period

3. All disposable facial respirators must be discarded at the end of the working day

4. Refer to instructions for specific pesticides

5. Refer to the respirator manufacturer’s requirements for a specific pesticide

6. Must be discarded at the end of the working day if there is no instruction manual for a particular pesticide