
Hi, I've looked back through your previous posts to see that he's a Cavalier. That being the case, I would just simply snip the knots out with plain scissors. That would cause him the least anxiety and pain, and would therefor not set him back in his grooming tollerance. It will be barely noticable if at all, and it'll grow again in no time.
Take it from somebody with American Cocker Spaniels..........hair grows. :)
Dawn R.