I've been having issues with fleas all summer and into the fall. We frontline our dogs and cats but it doesn't seem to be helping like it should. I don't know if the fleas are what is causing our current problem or not, but for the last few months we've had several dogs and a few of the cats develop bloody diarrea. Everytime we would try to track down who was pooping it out, it would stop and we couldn't tell for sure. Well, my male chihuahua has been losing weight and today we noticed a dark brown crust around his butt. Then he had an accident on the floor and it was pure red. Then our lab mix walked into the dining room and had an accident right in front of my younger DD and she screamed and I came running to find that the dog had pooped out a bloody mess that had the consistency of pureed raspberries. As we cleaned it up we noticed worms in it, big worms. I figured large roundworms. I am out out of dewormer right now, but I will get some. Upon returning to my chihuahua's mess to clean that up we found worms in his mess too. To complicate the entire situation I have a neighbor that apparently is losing his mind and has suddenly turned against all the surrounding neighbors and we suspect that he has been putting rat poison in my yard because we lost my little 3 lb chihuahua is august after she bled out. I asked the vet what she thought it was, as I was thinking parasites or something viral, but she said no, it had all the appearances of rat poisoning and she was positive that is what it was. So now we are super wary when our dogs are outside. Our mini daschaund has had bouts of this bloody diarrhea too, though his poop is solid right now. My girl chihuahua is fine too. So I am clueless as to what this could be. Does anyone have any ideas? If I didn't still owe my vet $350 for the emergency care of my chihhuahua that died, I'd take my dogs in to see her, but I am broke and have to pay that bill off first. If someone knows something I can do here at home, or some advice, please let me know. Thank you.