Jayapataka Swami:The point is that, if you are an initiated devotee, then it is very beneficial for you, and not so much trouble for the devotee. But sometimes people who are not devotees take the dust, and sometimes devotees distribute their guru’s prasāda remnants to non-devotees. That may cause great trouble for the devotee. What is being said is true, but it may cause some trouble for the devotee, if the person is not a devotee himself. So, that was the thing that Śrīla Prabhupāda said, that we should not give it out to non-devotees, or to uninitiated devotees.