The answer to 'how to prevent ant' is to take a multi-pronged approach that includes sealing entry points, removing food sources, and using targeted treatments. Start by inspecting your home and sealing any cracks or crevices where ants may be entering, using caulk or other sealants. Eliminate food sources by keeping counters and floors clean, storing food in airtight containers, and promptly cleaning up any spills or crumbs.
Next, use targeted ant baits or insecticides in areas where you've seen ant activity. Apply these products according to the label instructions, being careful to keep them away from children and pets. You can also try natural repellents like cinnamon, vinegar, or essential oils. Finally, maintain good sanitation and landscaping around your home to discourage ants from taking up residence.