I've been trying to find a single dewormer that will take care of any type of worms my chickens may have. From what I've been reading here, Valbazen seems to be the best answer. I have a couple of questions I need help with: Other than online, is this available through a retail store? How do you administer it to your chickens? Do you put it in their water or do you use a syringe (without a needle) to squirt it down their throats? And how often do you deworm your chickens? Any other info you can give me would be appreciated. Thank you!