| No | Sampling sites | Sampling dates | Sites descriptions |
|---|---|---|---|
| 1. | Pontian, Johore | 9 May 10 | Near a plant agriculture area. |
| 2. | Kampung Simpang Renggam (KSR), Johore | 9 May 10 | Near a housing area. |
| 3. | Seremban, Sembilan | 4 June 10 | Near shop lots and road sides. |
| 4. | Kapar, Selangor | 5 June 10 | Small scale housing area. |
| 5. | Universiti Putra Malaysia (UPM), Selangor | 5 June 10 | Near agriculture area. |
| 6. | Butterworth, Penang | 12 June 10 | Near an industrial area and highway. |
| 7. | Kluang, Johore | 19 June 10 | Near paddy fields. |
| 8. | Karangan, Kedah | 12 June 10 | Near oil palm plantations. |
| 9. | Permatang Pauh (PPauh), Penang |
12 June 10 | Near a housing area and highway. |