Features:Cats will eat the combed hair into the stomach when combing their own hair, which is not good for the health, but the ball helps the cat to spit out the hair balls in the stomach.What should the do if he has small troubles? silvervine balls can help cats stress when they are depressed and have a poor , their spirits and increase their .Does have side effects? has a temporary effect on cats, usually lasting 5 to 15 minutes.After the wears off, it will take at least an hour for the cat to respond to .Why does the cat dislike it after a while?Most cats to normal within 5-15 minutes of smelling the scent and lose interest in the plant. The longest period of is usually no longer than an hour, and it takes at least two hours after a single application of to regain interest.Advice:Cats younger than 3 months of age may not be sensitive to is not recommended for pregnant female catsPS:Because cats only have a 3-minute for anything novel, it's usually necessary to seal in a sealed bag or box, because even through the plastic bag cats will still smell it, and cats who often smell will lose interest.So be careful when using itinclude:1*Cleaning Teeth ball