I bought hartz ultraguard plus flea and tick drops for my 1 year old wheaten terrier. I used this on him at 3 pm on saturday, a little while later i noticed him scratching excessively! I waited for a while just thinking he didn’t like the feel of it on his back… but he got worse, very restless, and sometimes crying when he would scratch. Now its 6 am sunday and he still hasn’t been able to sleep, he jumps as if something is hurting him.. After reading all the horrible stores about these products i’m really worried about what this might be doing to him… did anyone else on here have their animal react this way before they got worse? I emailed the company, I let them know that i won’t be ignored or put on hold… if anything happens to my baby, trust me, they will never hear the end of it!!!!!!!!! It amazes me that anyone would even want to sell this shit! LIKE REALLY, THEY NEED TO STOP POISIONING OUR PETS!!!!!!!!!