Room Treatment for Corners - Recommendations?


Do folks have any recommendations for ceiling corner room treatments? I had read some good reviews of such triangle-like treatments from Eight Nerve, but the company appears to be out of business now.

I may also want to try some other treatmetns too, but corners are my priority just now. I'm improvising some pilates tubular exercise type thingies in on the floor in the corners behind the speakers currently, but am guessing I may get better results from proper tube traps, although they can get pricey and I'd prefer to focus on more cost effective solutions.

Any ceiling-corner solutions out there?
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Most improvement for the money is spent on good bass traps in the 2 corners behind the speakers. In my room, I heard no difference in putting 2 more in the 2 corners behind my listening seat. I have Real Traps minis in the 2 behind the speakers and have tried the RT Mondos there, also. I kept the 2 minis. Really tightened up the bass and removed any boom in it.
Rolled up carpet in the corners, floor to ceiling, will do the trick. Also, save you money. Doesn't work, back they go for a full refund. Yes, I know low on the WAC, but you let her pick the color.
I've noticed a huge improvement with a variety of RealTraps in my room. The MondoTraps are the best choice if only getting a few, because they're far more effective at low frequencies than other RealTraps product.
I have had good results with the Acoustimac bass traps. They have four inch and six inch traps and also have a good assortment of fabric colors and the service is fast.