Since its just dh and I, we have it in a 1/2 pint jar with a lid, and yes, we wet the brush and gently dip. You don't need much.
And I have never noticed it getting icky.
With kiddos who are likely to make more of a mess, you can either mix a big batch, and then put a portion into 1/4 pint jars with lids, or have a small dish that a bit can be shaken into for each seeion. This is what my sil does with her children.
For realy little ones, who will balk at the taste, my mom made a coconut oil version. She stopped using it, because she did not like the residue in the sink, but I would much rather deal with the residue, then my child injesting Fluoride twice a day.
Here is the link
http://tim-pam-inchristalone.blogspo...ntal-care.html You might enjoy my hubbys comment at the end.
Oh, and for those dealing with sensative teeth, this stuff is the answer. The only time my teeth feel a bit funny, is if I sneak a bit of something that has sugar in it.