Question
Can I get rid of ants by sprinkling flour wherever you see ants?
Answer
Mostly no.
Explanation
A common recommendation, online and offline, for getting rid of ants with a "natural" solution is to use flour. The claim is that when the ants ingest the flour it expands and makes their stomachs explode.
There is no evidence to suggest this is true. There are no published studies (yet) to support or reject the claim.