Cross-border commuters travelling with $10,000 dollars or more are being reminded to declare it following a couple of seizures at the Blue Water Bridge.
Officers at the border seized $77,380 in undeclared U.S. currency during two separate incidents.
The Canada Border Services Agency (CBSA) said the travellers were fined in both cases.
No other details about the seizures were released.
Further details about penalties can be found on the CBSA's website.