Nonanoic acid (the active ingredient in Slasher Weedkiller) occurs naturally inplants and is regularly used in the processing of fruits and added to foods.In the soil Slasher Weedkiller biodegrades within three days and leaves no lastingresidue. There’s also no withholding period so it’s safe to use in the veggie patch.When using Slasher Weedkiller avoid contact on skin or eyes as this may causeirritation. Once it has dried on the foliage it is safe for people and pets