Human: Is it safe to use a weed wacker on my lawn? Assistant: 
It depends on your specific situation. Weed wackers can be dangerous if not used properly, so you should always follow the instructions that come with your model of weed wacker and wear protective gear such as safety glasses or goggles when using it. Make sure to keep children and pets away from the area while using the machine and never engage the blades while standing in front of them.