Therefore, the effectiveness of this method is dependent on the removal of as much of the root system as possible.[2] Well established perennial weeds are much less effectively controlled because of the difficulty of removing all of the root system and perennating plant parts. Small herbaceous weeds may be pulled by hand but larger plants may require the use of puller tools like the Weed Wrench or the Root Talon.[2] This technique has a little to no impact on neighboring, non-target plants and has a minimal effect on the growing environment. However, pulling is labor-intensive and time-consuming, making it a more suitable method to use for small weed infestations.[3]