The Scottish Government is developing a strategy to cut down on litter before high-profile events such as the Commonwealth Games and Ryder Cup in 2014.
A summit will be held early in the new year, bringing together organisations with responsibilities for tackling litter, to find the best ways to solve the problem and to look at its impact on councils and the wider Scottish economy.
Led by Environment Secretary Richard Lochhead, the summit will also consider the findings of Zero Waste Scotland's research into why people continue to drop litter.
The public body funds work to prevent littering and increase recycling, spending almost £1.8 million this year.
Mr Lochhead said: "Litter continues to let Scotland down and it is essential this level of positive action is taken to rid our country of this unnecessary eyesore.
"This is particularly important as we prepare to host world-renowned events like the Ryder Cup and Commonwealth Games in 2014.
"It's staggering to think that on average almost four plastic bottles and three drinks cans can be found on every 100m of motorway and trunk roads alone in Scotland.
"The impacts of littering are far-reaching. It is bad for the environment, wildlife, and communities and wastes resources which should be recycled. It also costs the taxpayer millions to clean it up. We need to change our attitude to litter and create a culture where it is viewed as completely unacceptable."
Iain Gulland, director of Zero Waste Scotland, said: "It's essential we change the way people view litter and waste in general. The items we think of as waste are valuable resources and when recycled, they can create economic benefit for Scotland.
"Embedding this kind of thinking into a new strategy for litter in Scotland will create an approach different from anything that's gone before."