Purchase a general use herbicide. Nurseries and garden centers carry a selection of products from different manufacturers. Only purchase the amount of herbicide necessary for the job.
Read the product label. Look for an herbicide containing water soluble active ingredients, such as glyphosate or triclopyr amine. Make sure it is intended for cut stump applications.
Wear protective clothing when handling herbicides. If you get herbicides on your clothes or skin, remove your clothes and wash exposed skin immediately with soap and water.
Follow the product label instructions when mixing and applying herbicides. Failure to do so violates the law.
Use a chain saw and cut the stump as close to ground level as possible. Make sure the surface is smooth and even. This helps minimize herbicide runoff.
Apply the herbicide to a fresh cut surface. Use a small paint brush and spread the pesticide over the surface of the stump. If the stump is larger than 3 inches in diameter, only treat the outer 2 to 3 inches of the stump.
Check the stump for re-growth. Remove new shoots and re-apply herbicide, if necessary.