Best Answer

Honestly, I've never heard this. There are some things to be afraid of though, especially with oils. Many types of olive oils are made with a "hint of garlic" to make them taste better. Sometimes they don't put it on there, but I have a very sensitive sense of taste, and I can tell you it's in all kinds of olive oils. Garlic is however, poisonous to cats. Personally, my kitties get about a thumbnail sized drop of Petromalt a day, and they never have problems with hairballs. It comes in a tube and is sold in all the shops that cater to pets that I've been in. It's also really inexpensive. I bought a large tube (don't know precisely how much, sorry) about three or four months ago. I give it to all three kittens every day, and I still have most of the tube left. I haven't had any problems with them getting sick, though you might want to get a small tube at first, in case one of your cats is particularly sensitive. Honestly, it's cheaper than olive oil, and safer.

Mieke, Destroyer of Worlds answered on Jul 20th.