Published: Dec 04, 2013 7:34 PM EST
Updated: Dec 04, 2013 9:32 PM EST

COLLIER COUNTY, Fla.- "It's important anytime somebody has a suspected package that they don't hesitate, they call 911," said East Naples-Golden Gate Fire Chief Kingman Schuldt.

That's what workers at International Delivery Solutions did Wednesday afternoon after opening a package that caused concerns.

"Had some minor skin irritation."

Minor or not, East Napels-Golden Gate Fire Chief Schuldt said all first responders take these types of situations seriously. WINK News is learning, this particular company in East Naples processes bulk mail for TSA.

"Everybody knows of the white powder incidences that were initiated about 10 years ago so all the fire rescues throughout the country and even here in Collier County set up hazardous material teams and what we call suspicious package protocol."

Crews then went inside.

"Sent an initial recon crew inside to investigate. Doing some atmospheric monitoring, substance monitoring, and see if we can determine what the potential substance."

Chief Schuldt said the employees are going to be okay. But it's another reminder to stay vigilant.

"They actually did the absolutely correct thing, unknown substance you contact the emergency responders will come out to determine if its safe or if theres a hazard present."

Fire officials tell WINK News after several tests, they don't believe the substance is suspicious. They have not yet ruled out that it was caused by packaging materials or paper mites, which are like bed bugs.