5% vinegar is 5% acetic acid and 95% water. So by reducing the 5% by approximately half by evaporation you will get the equivalent of about 10% vinegar. So says my sis the chemistry teacher, anyway. I'd bet it's close enough! Do keep asking about pickling vinegar, though. I know there are plenty of grandma's, aunts and moms who still make their own pickles! She says use a container with small holes, because the acetic acid will evaporate some, too.
Lowes doesn't carry Gardenville products
but they do have a selection of organic products
in Texas, Louisiana and in the northwest US. They also have organic products interspersed with their regular materials all over the U. S. They're not marked organic, but they have ingredients such as neem oil, boric acid, pyrethrum, diatomaceous earth, etc.
I have sent a message to CaptainCompostAL to see if he might know of some places nearer you to recommend. He is the compost moderator on this forum and located in Birmingham, Alabama, a LOT closer to you than Dallas or Austin!
Good luck and best wishes!