Tour firm wants clients to help Denmark and have sex

A Danish travel company has launched a unusual campaign to heighten clients' sex drives and ultimately boost Denmark's low birth rate.

Spies Travel, which is part of the Thomas Cook Group, is offering discounts for Danish mothers to send their grown-up children on an activity holiday, in hopes it will hasten the arrival of much-wanted grandchildren. | Getty Images

The "Do It for Mom" campaign asks for a "donation" of at least 25 Danish krone ($3.74) towards a holiday package, which Spies will match with a discount of up to 1,000 Danish krone ($149).

Denmark has one of the lowest birth rates across Europe at 1.7 children per woman, according to 2013 World Bank data. That's already down from 1.9 back in 2010.

"It puts our welfare and Spies' future business under pressure," a translation of the campaign landing webpage explains. "But those who suffer most are mothers who may never experience [having] a grandchild".

The accompanying video ad gets a little racy, but include shots of a sad grey-haired woman sitting alone in the park or flipping through photo albums in an empty home.

"Send your child on an active holiday and get a grandchild within nine months," the video promises.

But all good wishes for population growth aside, Spies' Head of Marketing Eva Lundgren admits it's a creative ad gimmick that's mean to promote the firm's "active" travel packages

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"The falling birth rate in the future will be a problem for us. That's pretty valid, but it is a humor technique," Lundgren told CNBC in a phone interview.

"The benefit is of course the engagement from the public, and it's our way to stick out in a generic travel market," she explained.

Spies' webpage claims a sunny activity holiday boosts the average Dane's sex life by 51 percent. "But what you might not know is that exercise with your partner increases the sex drive even further," the video ad says.

It's not the company's first foray into rather racy territory. "Do It for Mom" is a continuation of Spies' "Do It for Denmark" competition last year, which doled out prizes for mothers who were able to prove they became pregnant during a "romantic" city break — booked through Spies of course.

Prizes ranged from a year's worth of diapers, a baby buggy and a resort holiday for the new family.

This time around, Spies could be spending a good amount of cash, with up to 1000 Danish krone towards every client's holiday booked before the December 1 deadline. But Lungren insists the campaign is worth its weight, and despite no upper limit, is accounted for in Spies' discount budget.

Most participants are expected to head to Mallorca in Spain, the Canary Islands, Greece, or Turkey as part of the deal.

Anyone, not just childless Danes can take part, as long as they fly out of Denmark, Lundgren said.