Kelly, there is a Chinese chalk on the market. It comes in a little orange and black box. However, from what I understand, any chalk will do.

I have a serious ant problem in the spring and it drives me right up the wall.

I put the kitties food down and their water bowl and draw a line of chalk all around each. The ants won't cross that line because it gets on their feet. It may not look the best, but it does work.