I have used Beaphar, personally prefer to recommend the Xeno though (Xeno 450 for pigs over 800g) as dosing seems to be a bit more accurate.
Do repeat the dose after 7-14 days (10 being the usual), and then a few days after the last dose bath Naboo to wash off any debris/dead parasites, as this waste can continue to irritate piggies skin even after the mites have been killed off.