The family of Lyle and Marie McCann -- a couple from St. Albert who have been missing since July -- are planning to launch a series of billboards along highways west of Edmonton to generate some tips about the couple's disappearance.

"Please Help Us Find Our Parents" will appear on the billboards as well a note promoting the $60,000-Crime Stoppers award that leads to the whereabouts of the couple.

The billboard will also include a picture of the missing couple.

"We believe that someone has seen something...we wanna keep it ongoing in their mind and hopefully it will trigger a memory," said the couple's granddaughter Nicole Walshe.

The couple's family said they will continue to search for Lyle and Marie McCann until snow hits the ground. The family said flyers are also being given out to anyone buying a hunting licence in Edson.

The couple's family began a ground search in late September around Nojack, located about 150 kilometres west of Edmonton where the McCann's burned-out motorhome and SUV were found on two separate occasions in July.

Searchers scoured the land on ATVs, looking for anything that could lead to the whereabouts of Lyle and Marie who have been missing since July.

Up until recently investigators asked the family to hold off doing its own pursuit.

That search came one weekend after RCMP executed a search warrant on a private property in the area. Officials have not said if they found any key evidence, but confirmed no bodies were recovered.

Travis Vader is the lone suspect named in the case.

The billboards are expected to be up this weekend along the Yellowhead Highway.

With files from Dez Melenka and the Canadian Press