Often society looks for the quickest, easiest way to accomplish a goal without considering the repercussions. It is not unusual for me to get a call from a client saying they think the freshener was flushed down the toilet consequently causing a clog. Retrieving them from the waste piping can be a tedious and costly affair.
If after examining the cost-benefit analysis one is still willing to take the risk, great. But at least understand the risk involved. In our home we simply leave a toilet brush and cleaner in close proximity and regularly clean the bowl. It only takes a few seconds.
All the best,