Organisers welcomed about 50 people to the clear-up event, which covered almost the full length of the Rochdale Canal from Walsden to Sowerby Bridge, and said the momentum behind their movement was growing.

"About 50 people turned out to help over two days, working from three different locations," said Mary Clear, upper valley community development officer for Calderdale Council's safer and stronger communities.

"We want to thank everyone who took part. This was even better than our first event last autumn and we were strongly supported by the Waterways Trust, British Waterways and Sustrans, who all sent helpers from outside the immediate area.

"From within our district, we had help from ordinary residents who care about our environment, town councillors and our community wardens. Many asked to be told of future clean-ups, so they can stay involved.

"This is a fantastic example of community organisations working together to improve the spaces we live in and use on a daily basis. More than 35 people turned up at Fielden Wharf and we managed to clear almost all the canal towpath in Todmorden and Walsden. Unfortunately, it is now very obvious which sections we did not get to."

Louise Harrison, project coordinator for Upper Calder Valley Renaissance, who organised pick-up teams at Hebden Bridge and Luddenden Foot, was also delighted.

"Throughout Calderdale we filled over 70 large bags, so the effort was definitely worthwhile and the difference is very noticeable."

A major problem remains that a litter-pick cannot deal with. "Dog fouling is still a large nuisance in Todmorden and Walsden – and a potentially dangerous one," said Doug Blenkey of Todmorden Pride.

"The responsibility lies with dog owners who refuse to pick up after their pet.

"Nobody enjoys doing it, but those who appreciate both the health risks and the unacceptable result of not doing so, won't hesitate to pick up. If you aren't prepared to pick up, don't have a dog.

"I am very pleased that Scoop has the support of councillors and Calderdale officers and I would be delighted if this cause could be taken up officially.

"As an informal group, the Scoop campaign can highlight the problem and hope to enlighten the public – many of whom agree with us anyway, judging by the encouragement we were given on Sunday by other towpath users.

"However, the actions which will really ensure success are the better provision of dog bins, general litter bins and dog bag disposal points, and sadly, but probably most importantly, enforcement of legislation. Only proper authorities or police are able to prosecute those who are, after all, breaking the law."

Scoop organisers hope to arrange further regular clean-up programmes through the spring and summer.