A BRISBANE burger joint is facing a consumer backlash after they delivered condoms to letterboxes across Brisbane to promote their beef patties.

The condom packets bear the slogan ''get intimate with our new premium beef'' and were delivered to letterboxes across New Farm, West End and Kelvin Grove at the weekend.

Burger Urge owner Sean Carthew said the complaints have begun rolling in.

''We've had a parent complain and say if their child found that in the letterbox that would be concerning,'' he said.

''We've got some big franchise competitors and we're a small business. When you just do standard flyer drops, more often than not they just go straight into the bin. We're just trying to be a little bit creative about how we can market.''

One irate condom recipient emailed Burger Urge to express his disgust.

''I've never contacted a company to have a whinge before but I've got a couple of extra days off this week so I'm making an exception for you,'' he wrote.

''Yesterday you put a condom in my mailbox to try and inspire me to eat your burgers? Sorry I think you just lost a big chunk of market share to Grill'd and the local pub. At least they've got some shred of class.''

But Mr Carthew said his business couldn't afford multi-million dollar fit outs or big promotions.

''To be honest, it's hard enough the retail market the way it is at the moment just staying in business. We've got 70 employees who pay their rent and rely on us to be solvent,'' he said.

''I feel like us staying in business is our primary objective and if that means that one or two percent of the population might be offended and might boycott our store well then I can still sleep at night.''

The business has also done ''wobble board'' promotions targetting Lance Armstrong and Alan Jones, but Mr Carthew said he never wanted his promotions to be grotesque.

''I showed my mum and dad before we put them out and mum went `oh Sean, you can't do that' and dad laughed. They both concluded it was a bit cheeky but not anything that was going to change the world. If anything it's promoting a good cause which is safe sex,'' he said.

''People jump up and down like it's an outrage but there are wars going on.''

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