I have been having trouble with mosquitos here and now have my first chicken with fowl pox. I am going to vaccinate the rest of the flock but when I bought the vaccine from the feed store they were out of the applicators. I went to every feed store vet around here but no one had the applicator. One vet told me to just use a sewing machine needle in the place of the applicator. I just don't see how that is going to give the appropriate dose because the applicator has grooves in it to give a dose of 0.01ml per prick. Has anyone had to substitute a needle for the pricker?