Erase tool in Texture Paint mode?

Hey guys,

I just started using the texture paint tool cuz I would need it for a specific thing. So I started painting on my new alpha 0 image, works like a charm for painting the color you want but where’s the eraser tool?

I found on the Blender wiki that you can use your erase side with your pen using a tablet to enable the eraser, but first: it’s not working, and secondly: what if I’m not using my tablet?

Thanks! =D