[Jack Grimshaw]

Search Randy Oliver's Scientific Beekeeping site about using formic pro.

He's in California and simply covers the top of formic pad with the foil packet it came in. This limits off gassing to one side of pad. It evens out and extends the off gassing. Virtually eliminates that massive discharge on hot days when first installed and results in no queen loss.

I think you are refering to Randy's experiments with off label applications of Formic Pro in nucs and at above recommended temps in singles.

Keep in mind that these were experiments by someone who could afford to lose a hive or 2.