I had to trim a lot of knots off back in September. This is the first time they've been out of hand. I used to see them here and there but they weren't a major problem. I think it was because I stopped trimming regularly. I hadn't had a trim in almost a year. The last time I straightened it was back in July. I intended to clip my ends but they didn't look bad so I left them alone. IDK what happened between July and the September straightening but they were out of hand and causing massive tangles. I plan to trim every 6 months now just as a preventative measure. I never had a knot problem before when I trimmed regularly.