Use Coffee Grounds to Get Rid of Ants

Summary : Coffee grounds are natural alternatives to the insect spray since insects tend to avoid strong smell of the brewed coffee. In addition, it is economic and eco-friendly way to ward harmful insects off.   

Persuasive : In general, people believe using chemical pesticides is the best way to  get rid of insects. However, this article shows that natural alternatives also works well. What's more, it is much easier and cheaper way. Therefore, I think it is better to use coffee grounds as insecticide rather than chemicals. 

Source 

Mark Wilson. "Use Coffee Grounds to Get Rid of Ants" Lifehacker. 23 June 2014. Web. 25 June 2014.  http://lifehacker.com/use-coffee-grounds-to-get-rid-of-ants-1594724374