I tried this last year: it works! How to make an inexpensive non-toxic homemade weed killer to control weeds in your garden: 1 gallon of white vinegar cup salt Liquid dish soap (any brand) Empty spray bottle
Borax is the most common ingredient in house ant control products. It is natural. Mix 1 cup of warm water with cup of sugar, and 2 tablespoons of Borax. Then, soak cotton balls in the Borax mixture and place them near any ant trails in your home.