I would use the spray you bought full strength to spray my coop tonight.What product do you use that's 0.25%? That's the same percentage as I found... I'm debating maybe spraying it at full power in the coop/roost, and then adding some water to the jug and spraying the birds with the diluted stuff...
I would NOT try to dilute it if I were you.
What I am un sure about though is if I would use on my animals.
Give me a few more minutes to dig around and see what the first ingredient is.