No I haven't tried the salt and Vit C, as suggested. I have, however, done morning salt flushes and this posed a problem for me. The ascaris in the stomach can cause irritation in the lining, causing severe nausea and everything gets thrown up except for the dumb critter. Ascaris are smart and tenacious!
The other problem with ascaris and why they hard to get rid of is that they have 3 muscle layers that protects them. Whatever can be used, must attack them from the inside and their tough muscle layer. For this reason, I don't think salt & Vit C won't cut it.