This from the Walton County Sheriff's Office:
The Walton County Sheriff’s Office is continuing its investigation into the poisoning of a 4 month old little boy from Freeport, FL. At this time, the investigation shows the nasal spray was given to the baby inadvertently by the baby’s grandmother. The bottle used on the baby contained acid of some type and was submitted to the Florida Department of Law Enforcement for testing. Preliminary tests were positive for acid but the Sheriff’s Office is still waiting on results to confirm the exact chemical.
The investigation indicates the storing of acid in nasal spray or eye dropper bottles is consistent with the activity of persons who manufacture methamphetamine. However, at this time the person who placed the acid in the bottle is undetermined. During the investigation it was determined the grandmother who administered the spray did so without any intent to harm the child. After reviewing all the evidence gathered in the case and conferring with the State Attorney’s Office, there will not be any charges filed in the case at this time. The Sheriff’s Office will continue to follow any available leads as they develop that may enhance the case.