Residents across the capital, particularly those living in the suburbs of Kambah, Wanniassa, Gordon and Chisholm, will receive free washing detergent in the mail over coming days from Samsung, with a message urging them to check the model of their washing machine.

Six models of its top loader washing machines were recalled in April 2013 after some caught fire and exploded.

More than 1200 units have been recalled so far in the ACT.

But tens of thousands of Samsung top loaders are yet to be replaced, refunded or reworked, with a high concentration of those believed to be in Tuggeranong.

"Samsung has found that over time, traditional mass advertising campaigns regarding the recall are generating fewer and fewer responses from customers," Mike Lilly, Samsung's head of home appliances, said.

"For this reason, we have developed this campaign that taps into the one thing that everyone does in the laundry: fill their washing machine with detergent.

"We have identified several suburbs in Canberra as areas that could have a high concentration of Samsung top loader washing machines impacted by the recall. Please check your own washer, but then encourage your neighbours, family and anyone else who could own one of the affected top loaders to check their machines."

Potential owners were identified using aggregated data from Samsung's warranty, service, promotion and logistics databases as well as information from local retailers and technicians.

The company came under fire after the recall when customers discovered a controversial plastic bag and tape fix was being applied both to recalled faulty units as well as nearly 4000 sold after the quick fix was applied.

Samsung relented to anger over the fix, offering a replacement or refund to 70,000 customers unhappy with the controversial repair.

Customers impacted by the recall can visit Samsung's recall website www.samsung.com/au/washingmachinerecall or call its dedicated toll-free product safety hotline on 1800 239 655.