"Many people just forget to take care of it or are completely unaware."

The only problem is that they are completely unaware of each other's existence.

Alive and completely unaware, she was one of the living dead.

The three men watching the fire were completely unaware of the boys.

She would remain like that for a while, lost in her own little world, completely unaware of his presence.

Karen is completely unaware of either herself or her environment.

In other words, we are completely unaware of them, usually because our mind is somewhere else.

As a result, the two sides are completely unaware of one another's existence.

She was completely unaware of the attack on her sister.

All the while completely unaware of what it was doing.