The other stuff is Creocote Woodlands and I'm sure if that's what it was it would be labeled as such. I suspect what you have bought is a more refined and better quality brand of creosote- sure it will kill and discourage mites just as well.
As far as I am aware creosote is banned in France for environmental reasons. They don't have wooden coops down here anyway, although the first Chinese units arrived in one of the shops last year they don't seem to have sold any yet. Hardly surprising, because none of them have any ventilation facility so any chickens in them will either cook in the nest box in the heat of the day here, or suffocate overnight!