The test area for Ice Ban was the northbound and southbound lanes of I-81 from Halfway Boulevard to the Pennsylvania line, Davis said.
"Regular salt was then applied to the north and southbound lanes of I-81 from Halfway Boulevard to Williamsport so we could compare the difference in effectiveness,'' Davis said.
One of the private contractors working for the SHA during snow removal operations spread salt over the Ice Ban test strip, thus skewing the test results, Davis said.
Davis said he was confident that Ice Ban will prove itself the next time snow flies.
Ice Ban was "created" by accident from an agricultural by-product, Davis said.
Farmers who store corn, soybeans and other crops in silos as food for their farm animals noticed that the "juices" seeping from the silos kept ice from forming on the ground, Davis said.
From that came Ice Ban, which is then mixed with salt and has the advantage of being cheaper, more environmentally friendly and more effective at lower temperatures than pure salt, Davis said.
Pennsylvania transportation officials also plan to test the product in a pilot program this winter.
They said they will expand an anti-icing program that showed positive results last year.
Ice Ban is distributed by EastCo Services, a division of Castlebar Industries.