I dun think monks & nuns here practice asking for alms. Even
if for alms, they will ask for food, never for money. Moreover,
many of these monks & nuns don't look local ~ no way am i gonna
supplement their "spending" money here.
I always shake my head or hand - thus far, all of them just walked
quietly away for fear of trouble. Its easy money for them, almost
no costs to get the robe / shave head / get a bowl, etc.
I think no demand no supply, they will disappear if everybody stops
giving them money.