Cornmeal and icing sugar. Sugar attracts them, eaten cornmeal blows them up.
Sevin Dust or Diatomaceous Earth
Hi Adriana - Those little buggers are relentless, aren't they?!? This is the most effective method and all-natural spray DIY that we use with ants. It's best indoors, but will also work outside with more frequent applications. Hope this helps! Hugs, Holly