HazMat Smart Strip detects Harmful Chemicals in Air; at home or business test

This product is same to be useless

NEEDS TO SHOW SOME KIND OF A RESULT-I THOUGHT I WAS RIPPED OFF

Honestly, I am not sure if this works... I left it out according to instructions but the colors of the squares were a bit different/off from the color around it to begin with plus, when I removed the seal that was on top of the test kit, it somewhat ripped the surface of the squares.I suppose it still should react if we had extreme levels of these chemicals in the air, but as nothing seemed to have shown up, the odds are either 1)Our air is all clear, or 2)this test kit was not very reactive.Wish I could say better but it is what it is.