Creeping Charlie is sturdy weed that survives well in a yard. For a yard that only has a minor Creeping Charlie problem, manual weed removal may be effective. For a bigger problem, a natural borax weed killer is called for. Borax is non-toxic to humans and the environment but will kill plants. Creeping Charlie weeds are more sensitive to borax than grass is. The key to successfully using the borax weed killer to kill Creeping Charlie is to use enough to kill the weed but not enough to kill the grass.
Water lawn to soften the roots of the Creeping Charlie weeds.
Rake the lawn to pull out the majority of the weeds.
Manually remove any remaining Creeping Charlie weeds by grasping the weeds with your hands. Slowly pull the weeds out of the ground. Do not pull quickly or you might break the weed off and leave the roots.
Natural Borax Weed Killer
Make a natural weed killer solution out of borax and water. To make the solution, dissolve 10 ounces of borax in 1/2 cup of warm or hot water. Add the dissolved borax to 2.5 gallons of warm water. This recipe makes enough borax weed killer to treat a 1,000-square-foot lawn. Do not use this amount on a smaller size lawn or you could kill your grass. Cut or multiply the recipe to adjust for a different size lawn.
Put the borax mixture in a garden sprayer.
Spray a thin coating of the borax weed killer on the entire lawn.