One more tip for unclogging plastic objects in Toto Drak
I'm adding one more suggestion, because it haven't seen it described in detail here.
My son dropped a rectangular 4.5" x 1" x 3/4" plastic measuring spoon (the adjustable kind, for liquid medicines) down our Drake.
I tried all the fixes mentioned in this and other forums. I plunged, then augered, then used the dish soap/bucket of hot water, method, then augured and augered some more (I have about a 4' augur). I cleared out enough debris that the toilet now flushed, but very slowly.
Before rushing out to buy a longer augur, I called Toto tech support and -- surprise, surprise -- the guy was great; patient, knowledgeable, experienced.
Here was the key information he offered: Most plastic objects of this size will be lodged, he said, in the upward curving part of the drain not far from the bowl. So the problem is not the length of the augur. The problem is that the closet augur is unlikely to "grab" a object like this; its more likely to stop or go around it.
He recommended draining the bowl, and using a small mirror (shining a flashlight on the mirror) to see if I could see it, then pull it out with a hanger. If it was further down, I'd probably have to remove the toilet.
Problem: no mirror handy. So I just tried auguring once more, but 1) shorter distance in -- just 10-24", and 2) instead of trying to slide and turn the auger to get it down as far as possible, I just used a "ramming motion" of quick, short push/pulls with the augur inserted at various, short lengths, hoping to randomly "hit" the spoon and dislodge it. I still couldn't feel anything, but when I started to pull the augur out, for the first time it seemed stuck inside and had to be jerked out.
Sure enough, it was probably stuck on the spoon and jerking the auger back out dislodged it.
The next flush, and all thereafter, have been "like new." Problem solved. Peace has been restored to the household, and $150 saved.
Actually, this "ramming" method is similar to the approach taken in another reply to this thread, the guy who used a closed-ended corrugated flexible pipe, instead of an auger. The key was finding a method for dislodging the object and shoving it further down the drain -- and hope it wouldn't get stuck further down!