PNG Customs' current border guidance is straightforward: travellers must declare food, plants and animal items. Customs also warns that quarantine-sensitive goods may be treated or destroyed at the traveller's expense.
Older and current Customs declaration forms give useful examples of the types of products border officers are interested in: meat, milk, baby food, confectionery, herbs, fruit, seeds, wooden articles, bamboo, soil, animal products, biological specimens and equipment associated with animals or agriculture.