“Rats flock to garbage, but the new salty pellets that are laced with birth control will reportedly be 'better than pizza' for the rodents." Photo Daily Mail Room 

"Rodenticides are not only toxic for the animals we love, they are increasingly ineffective at reducing rat infestations." dailymail.co.uk NYC-birth-control-rats   

Both large stray cat populations and pesticides harm birds.   'Flaco's Laws'. -- bird protection laws 

The lessons we will learn from testing rodent contraception will hopefully be useful for similar products for suffering large stray cat and dog populations in the future.