The 3 most common cockroach species in Singapore are:
- American Cockroach (Periplaneta Americana)
- Brown-banded Cockroach (Supella longipalpa)
- German Cockroach (Blatella germanica)
American Cockroaches are reddish brown and 34-53 mm long. Brown-banded Cockroaches and German Cockroaches are both light to darker brown. The Brown-banded Cockroaches are smaller in size, at 11-14.5 mm long. Cockroaches pose a health hazard and transmit diseases cholera, diarrhoea, dysentery and gastroenteritis.