How do you get rid of lilies of the valley that are taking over your yard?

To remove lilies of the valley from your yard, start by manually digging them out, ensuring you remove the entire root system to prevent regrowth. It may require repeated efforts, as these plants can be persistent. Applying a non-selective herbicide can also be effective; however, take care to follow the manufacturer's instructions and protect surrounding plants. Regular monitoring and removal of any new growth will help keep them at bay.