Customs regulations vary by country, but certain items are globally restricted or prohibited to protect national security, agriculture, and public health. Common forbidden items include fresh fruits, vegetables, and unprocessed meats, which may carry invasive pests or diseases. Illegal narcotics, counterfeit goods (like "fake" designer bags intended for resale), and endangered species products (like ivory or certain corals) are strictly banned and can lead to heavy fines or arrest. Many countries also restrict the entry of soil, seeds, and biological cultures. While you can bring "duty-free" alcohol and tobacco, exceeding the local limits (often 2L of spirits or 200 cigarettes) requires a formal declaration and payment of taxes. In 2026, customs agents are also increasingly vigilant about large amounts of cash (typically over $10,000 USD), which must be declared to prevent money laundering and the financing of illegal activities.