Funny, I usually put away the partially used toiletries because I feel bad when the cleaners throw them away if they're not empty yet. Then, if they put new ones in their place, I either take them home to use there (if I like them) or to donate to a homeless shelter, or I just leave them intact for the next guest to use. It seems so wasteful to throw away a bar of soap that's been used once or twice, or a bottle of shampoo that is still half full... I'm just concerned about the extra amount of trash generated, plus the fact that somehow the stuff contains chemicals which will eventually end up in the water...