I agree that the dog regulations have to be strictly enforced. I'm a dog owner and always pick up after my dog, and it disgusts me to see all that dog waste left on the sidewalks or grassy sections of Roosevelt Island by selfish, unthinking, irresponsible dog owners. I find that this is especially prevalent on the eastern side of the island, at the back of Roosevelt Landings. Although I see the so-called Public Safety driving by leisurely in their cars, they don't seem to notice how these dog owners behave when they are walking their dogs. I believe that for a certain period of time (maybe for 3 months), Public Safety patrol carefully during the times when dog owners usually walk their dogs (7-9 a.m.; 12-1 p.m. and 5-7 p.m.) and actually impose the hefty fines on dog owners for not picking up after their pets. In addition, other Roosevelt Island residents, whether they are dog owners or not, should speak up and tell owners to fail to pick up after their pets to pick up the waste or to report incidents to Public Safety. A few hefty fines imposed will probably help control what is now becoming a sanitary problem.