I got this Permethrin 10 but the mixing instructions are for 12 gallons of water. Math is not my jam lol. I just need to spray a couple birds. Did I get the wrong one? Any help on how to mix just a quart sprayer? I have one girl that I can’t tell if she’s just dirty or has something going on. She has never had full feathers since I rescued her and she is a Roo favorite. I’m bringing her in for a bath tonight and was hoping to spray her.