Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
A cleaning company produces two sanitizer sprays. One spray kills 50% of germs, and another spray kills 25% of germs. However, 5% of the germs they kill are the same ones. What percentage of germs would be left after using both sanitizer sprays together?

### Response:
After the first spray kills 50% of germs, there will be 100 - 50 = <<100-50=50>>50% left.
Then, the second spray kills 25%, but 5% have already been killed by the 50% spray, so it really kills 25 - 5 = 20%.
The second spray kills 50% of the remaining germs, so there will be 50 - 20 = <<50-20=30>>30% left after the second spray.
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