I have the small 50 ml which I keep in my purse, it is handy, and it means I can eat food without washing my hands when im out. Sometimes it's hard to find a bathroom.
Dettol is a trusted brand and it is the only brand I would buy hand sanitiser from. It is small and inexpensive and it makes a big difference to your health.
You only use a small squirt each time, so don't be fooled by the small size of the bottle
It also tells you if you have any cuts on your hands he he
i always use this when i'm washing my hands, it doesn't have much lather but you can tell its cleaning the germs off your hands because the smell is quite potent.