Vole Scram -- America’s Finest™ all-natural, granular, biodegradable and safe* vole repellent -- is designed and tested to stop, then prevent, damage from tunneling voles. Voles feed above and below ground on plant parts such as foliage, seeds, stems, roots and bulbs. Voles can ruin lawns, golf courses, wooded landscapes, ornamental gardens and ground covers through feeding and their extensive runway and tunnel systems.