Video report by ITV News Anglia's Natalie Gray
The RSPCA is asking for donations of washing-up liquid for its East Winch Wildlife Centre in Norfolk because their stocks are running low.
The centre gets through 28 bottles a week to clean the animal accommodation and birds with oil on them.
The centre is home to hundreds of animals, including 45 seal pups, 32 swans and 172 hedgehogs.
Everything needs to be cleaned regularly to help stop infection.