Wait, dumpster is trademarked? I've never heard of this before, but according to [0] it is definitely a generic trademark. Although this may be a great example of why VELCRO(R) is fighting a losing battle. At this point, it may be too late to change the average consumer's habits, as VELCRO(R) is in almost the same situation. Perhaps if they had started this campaign when the patent expired and generic alternatives appeared, but it's probably too little, too late at this point.
[0] https://en.wikipedia.org/wiki/Dumpster