Drug problems verified in 1000 Mice

There are 1000 bottles of medicine, but one of them is toxic. After a week, the mouse will die!
How many mice are needed to find toxic drugs in a week?

Answers include 9, 10, 32, and 999.

For example, if you have 8 bottles of medicine, you can get 3 rats...

Initial status of mouse:
000 (active)

8 bottles of medicine Number:
000 001 010 011 100 101 110 111

Feed eight bottles of medicine to a mouse in sequence:
No one will feed the first bottle
Second bottle 001 feed first
Third bottle 010 feed second
The fourth bottle is 011. Feed the first and second bottles.
...

If the N bottle is toxic, the white mouse's status will change to 000 & ABC

Use binary instead of decimal representation