Growing up i never used flea and tick medicine on my pets. i recently bought this product since i have a new balcony for my cat. immediately after application she began to rub and bump into me. i assumed she was okay but seemed very irregular after 2 minutes. i then noticed her mouth was open which caused me to supervisor her even more. she would lay down and pant and her eyes began to sink as if she was fading into sleep. she began to run and jump and hit things. Now its been about 15 minutes and it became almost a plea for help from her. i was so terrified. i began googling and saw all these horrible affects. i immediately washed the meds from her neck with her regular pet shampoo… “that Doesnt work”. she calmed down with the jumping and running and bumping but the panting and the heavy breathing increased. i didnt know what to do. it was all a clock game now. i thought my pet was going to die. after the panting, heavy breathing and urges to vomit become to much for both of us, i began to wash the treated area again. this time i used dawn dish soap. “life saver Seriously”. As soon as i exfoliated her neck with the soap she began to calm down. i’ve might of exfoliated for about 30 minutes and it helped incredibly with her pain. her breathing calmed the panting ended and now all she can do is lay down at this point. she was so physically drained that she could not bare with her own body weight. she layed for the rest of the day and night. she wasnt her normal self until the next morning. This company is out to murder your pets. Do not recommend this to anyone and if you see anyone attempting to buy stop them. you may be saving the lives of there fury friends.