Wardens at the central Dorking landmark say they have been forced to take the drastic step as the churchyard is in danger of becoming “a zoo”.
According to churchwarden Peter Bunn, the population of pigeons, squirrels and “less-pleasant vermin” living there is causing a significant risk to the much-loved building, which dominates the town’s skyline.
Control measures are currently being investigated, which may include making the feeding of animals in the churchyard illegal, as in London’s Trafalgar Square.
Mr Bunn told the Advertiser: “There’s a completely artificial population there now.
“I think this whole thing started when Albi the albino squirrel was here. After that we became used to seeing people feeding squirrels when it was really cold in the winter – but now it is every day.
“Their droppings are acidic and they are ruining the stonework.”
However, architects have warned there is high potential for stonework damage due to the large amount of pigeon droppings collecting on it.
The second major risk to the church, according to Mr Bunn, is that if squirrels manage to find their way inside they could cause damage to the historic organ or, more seriously, chew through electric wiring.
“As long as we can remember, it has been a traditional part of growing up in Dorking for children in the depth of winter to put out a few nuts for the birds and squirrels.
“More recently this has developed into year-round feeding with not just nuts, but large quantities of bread.
“This has caused not just exponential growth in the populations, particularly of pigeons and grey squirrels, but also now the appearance of less-pleasant vermin.
“The situation has now become intolerable with a serious health risk to surrounding houses and flats.”
Signs requesting “Please – no feeding” will go up at the church shortly.