Mr. Skep, I studied para moth by Brushy Mtn. They use the name "paradich-lorobenzene." This translated to 1,4-dichlorobenzene. Hold on, I'll explain what that means. This chemical is very poisonous, it can cause blindness, burn the skin on contact, burn the mucos membrane in nose, throat, lungs. It can be absorbed into your crystallized honey remaining in your comb.
I cannot advocate the use of this product on comb with honey crystals. Personally, I would'nt have that stuff anywhere near my bees, or equipment.
Stop reading here.
I'll give a scientific explanation. 1,4-dichlorobenzene is a very polar molecule with delta negatives on opposing ends I.e. 1,4 Chlorine, stabilized by the benzene ring. The extreme polarity will react with many systems and difficult to detoxify due to resonance capabilities confirmed by the benzene ring. In brief, a toxic molecule that reacts on contact with living tissue and difficult to render harmless by hepatic or immune function due to polarity and resonance stability.
Blessings