I havn't used the gel stuff, but i imagine you can use one of those big 30 cc surynges to suck it up. I got one for tube feeding kids and i have used it for a lot of different things hundreds of times. Probably one of the best things in my emergency kit.
As for the charcoal, i have the rock form you can get at the pet store, i keep a small coffee frinder in my first aid kit as well. This grinds it up to powder form and then i mix it with mineral oil.