State Environment and Conservation Minister Jay Weatherill recently approved a $10,000 grant application submitted by Clint Garrett on behalf of Friends of Parks Inc.

Mr Garrett said the grant will allow Friends of Parks to reduce rabbit warrens spread throughout a 400 hectare allotment in the Whyalla Conservation Park.

With about one rabbit warren to every 10 hectares in the park, there are 200 estimated warrens spread across the 2000ha area.

Committee members will continue to look for funding from additional sources to cover the remaining warrens in the park.

"The ultimate aim is to cover the whole park," Mr Garrett said.

The submission was made under the community grants for landcare, watercare and coastcare, and will directly address key regional natural resources management.

"Community groups play a vital role in the delivery of natural resources management in South Australia," Mr Weatherill said.

Pest destruction specialist Peter Baker has been destroying warrens for Friends of Parks for some time, after Mr Garrett learned of his work for National Parks in the Flinders region.

Mr Baker's procedure involves marking warrens with a GPS system, and returning to place charges in the holes of the warrens.

After attaching a fuse and igniting it, the charge emits just enough energy for observers to notice the soil lift.

Rabbits inside the warren at the time of the explosion are killed by concussion, while rabbits above ground who escape the explosion have no shelter, and become better prey to foxes and eagles.

Previous methods of gasing were successful at reducing rabbit numbers, but had no impact on the warrens - which were often reinhabited by surviving rabbits a later date.

Other attempted methods were reasonably labour intensive, but only attained moderate success rates.

Ripping, a successful warren destruction method often used by farmers, incurs more extensive damage to bluebush and saltbush in the park than the initial damage from the rabbits themselves.