We had guineas for a few years. They are loud. I ate them. I find that our
chicken laying hens are just as good at catching ticks and other insects. The
chickens are much quieter, better meat and produce more eggs that are larger and of better quality than guineas do.
The remedy that I have read of for ticks, lice and such is to pour vegetable oil in a line down the back of the pigs. I've also heard of pouring it in their ears. This is supposed to suffocate the parasites. I've never done it as we have never had a problem with these parasites and our pigs. I have read of some people using motor oil but I would not do that as it has chemicals in it that I would not want tainting my pork. Stick with vegetable oil.