They say that one is lucky if 50% of the money one donates gets to the cause. That is why I prefer to donate "stuff" instead of cash.
The "stuff" is unwanted, the costs are too high. By the time some one checks it, cleans it, puts it into storage etc you have simply costs the Redcross more than the item is worth.They are NOT going to supply goods that may cause harm.
Things like Blankets, they get them all prepackaged , new from the manufacture on pallets ready to ship anywhere in the world, they get them at a heavy discount because of the volumes they buy, and they can get them closer to the site of need, reducing shipping costs.
The "stuff" is just sold off, so even less real help is actually making it to victims.