I don't know what you mean, to be honest.
Just in a note side, Perfect fisher fails. ArbiFISH > Perfect fisher.
Btw, it's ARBI, not ari.
But now, to the point:
What do you mean with "safe"? You mean virus-free or if there's a chance of being banned?
Yes, it is virus-free - it doesnt countain any virus lol (like some bots advertises you see on yt - mainly autoclickers and talkers).
*ALL* of the bots will ban you if you don't know how to use them. Follow some tips, found in the own website, to do not get banned.
ArbiBots are really good and I've purchased their AbyssPRO and I'm VIP there. Really worth it.
Arbi's client sucks bad at randoms however nexus (perfect fishing clients) solves most randoms and messes up less. About the bot perfect fishing has got me 2 99's no ban never used arbi I would use perfect It's a great bot less chance of a ban
They some times crash and don't have the best anti-ban in them but overall they are pretty good for a free bot. I would say if you do it carefully you should be fine.