I went to Wal-Mart tonight to purchase Pet Armor flea treatment for our 4 indoor cats. We have previously purchased Frontline for our dogs and cats, but when we heard Pet Armor had the same ingredients, we thought we would try it and have been using it all summer. Suddenly it is unavailable at both Wal-Mart and SAMs .We have taken in roaming cats and had them spayed and neutered.Our indoor cats were injured or very young kittens when we found them. Frontline has become too expensive for our numerous pets. Out of desperation I picked up 2 boxes of Hartz Ultraguard Plus flea drops. I wondered how this treatment could be so much cheaper than even Pet Amor and still be good. I remembered years ago there was trouble with Hartz products, so I started looking for reviews and found this web site. I am so glad I did! I know the heartache of losing wonderful pets, family members and would not want to take even the slightest risk of making them sick or losing them. I am taking back the Hartz Ultraguard, calling the company, and warning people about everything I have read. Thank you, thank you! God bless you all.