Recently one of these organisations was questioned here, on the occasion of a disaster that occurred... many testimonies from people... in short, I have investigated some and the use of the funds is more than doubtful, some say they go to children and never arrive.
I have witnessed how people from an organisation that was there to organise took the best of the donations of clothes to take them themselves.
I don't give money to these organisations either, I have given my time on two occasions and I have seen some ugly things.