I am posting this in the hopes that someone here may find it useful and save alot of cash. We have 2 very large nuteared male indoor cats, 4 yrs old. The one male has a history with us of urinary blockages. This generally means a 2-5 night stay at the Vets along with Catheder, anitbiotics etc, totally $500.00. This has happened 3 times in 4 yrs, dispite a special diet that cost 70.00 per 14kg bag, and lasts approx 1 month. We, and the Vet agreed that a 4th blockage would result in putting my baby (humphrey) down. Well, last week it started again. Small amounts of Urine only, then no Urine at all with much pain. The time frame here is anywhere from 24hrs to 3 days before death. This happened on a Sunday night at 10:15pm. No Vet was open! We called the Emergency Service and made arrangements to take him in at 8:00 am to have him put down. Around Midnight, feeling helpless, as he was in much pain and crying, I searched the Net for answers for relieving his pain. I stumbled on a home remedy on Urinary Blockage for Male Felines. 1/4 tsp Apple Cider Vinegar(Mothers') with 1.5 tsp of water mixed with 250mg of Cranberry Extract and 1 tsp of water. I put this mess in a syringe and squirted it down his throat, much to his dismay. Bottom line folks, It is now a week later, no visit to the Vet (we did call the Vet and inform of our method and success), and Humphrey is just fine as can be. He was urinating 7hrs later and within another 12 hrs was back to normal. We now administer a lesser dose of this horrible mixture every second day. And he still hates it!