Yes, dont use it or use at your own risk knowing this stuff can make yeast not multiply meaning your yeast will start but most likely die off very early and struggle and stress out leaving many undesirable tastes and smells in your wine.
The bottled lemon juice used for Skeeter Pee usually contains sodium benzoate. If you check out the Skeeter Pee recipe, you'll see that there are some special proceedures employed to get fermentation in spite of the S-B. Keep in mind that with lemon juice, you have a fairly low volume of juice and lots of water. Other juices that aren't as strong may require a higher concentration of juice and the S-B would be more problematic.
"Thanks guys" was meant to convey my disappointment in not being able to use this concentrate that is the first I have seen in Costa Rica. Of course my appreciation to everyone for their help is well appreciated.