Chuggers should be trained to be "non-aggressive" when approaching members of the public, according to new guidelines drawn up by the Institute of Fundraising.
The institute's code of practice, which covers street-based and house-to-house fundraising, also advises that campaign organisers make efforts to avoid "obstruction, congestion and nuisance to the public" while raising money.
"The idea of face-to-face fundraising is controversial because it is a direct ask," said Megan Pacey, director of policy and campaigns at the institute. "But it is increasingly effective."
Fundraisers should also be able to empathise with potential donors, according to Pacey.
"It is important that face-to-face fundraisers are aware of how they are perceived," she said. "One person's reasonable approach might leave another person feeling pressurised."