Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Is the system necessary or can I just dump the tablet in the tank?
Document: I gave this 4 stars because it is not perfect but is still the best product I have seen for this purpose. Occasionally, a scrubbing action may still be required, however, this Kaboom system has many benefits including not putting chemicals into the tank which damages the flapper, it is very easy to install, it is very easy to refill, and significantly minimizes the times when scrubbing is necessary. It also seems to keep the water channels into the bowl clean and these channels are near impossible to clean once stained.
I have been using this product for at least five or more years and find it to be the easiest and most convenient way to keep the bowl clean. I like the fact that it is in the tank, in it's own little compartment in the water supply line so it does not just sit in the tank and dissolve but is only accessed when the toilet is flushed. Out of the way, neat, efficient, easy to replace the tablet...What more could one want?
Item arrived as promised. Been using this system for a long time because it does not let the cleanser enter the tak so the flapper and tank mount bolt washers are no subject to deterioration from a chlorine type cleaner
No in the bowl things to clip on or blue water, just tank feed no mess toilet cleaning goodness. Note that this is just the refills, the feed system has to already be in place or from another package. It's very hard to find these refills on the shelves anymore, but my wife loves them and they were worth seeking out. It's almost like they work too well, and all the other bathroom cleaner manufacturers formed a cabal to keep them underground.
Keeps away those nasty black lines from the water coming down that appear the day after cleaning my toilet if I don't have a KABOOM tablet in.
I cleaned my toilet bowl before using these the first time. Now I just make sure the cleaner is full and it works great. no scrubbing necessary.
I don't understand why this is no longer in regular stores! You can pretty much forget about having toClean the commode for 3 months. Assembly is easy, just follow directions. Drop in tablet and you're done.I'll be upset when this is no longer available.
I love this system. It keeps the toilet clean between regular cleaning and smells fresh. I cannot find the refills anywhere in town and was thrilled to find them online.
No odor, keeps the bowl so spotless I feel guilty when I clean the outside of the toilet and ignore the bowl. Not available at Home Depot but Lowe's has it. I don't worry about time. I just unscrew the cap from time to time and add a tablet when there is space, which is more than a month but I don't keep a log.
I am really impressed with the KABOOM Toilet Cleaner System. I think the refills are a little pricey but considering they are good for about 3 months it still is a good value. I have recommended this system to other family members and they have had good results as well.
Answer: yes