Best Answer: I dont think that you want to go there. Very likely they are not available because they are illegal. It is well that they should be illegal. and Aviotrol work by poising like one grain in a hundred so that only a few birds get the poison which gives them aThis site complies with the HONcode standard for trustworthy health information.User for. The following information is NOT intended to endorse drugs or recommend therapy. While these might be helpful, they are not a substitute for the expertise, skill, knowledge and judgement of healthcare practitioners in patient care.