YOU SAID:

If dogs trespass here they will be killed.

INTO JAPANESE

犬がここに侵入すると殺されます。

BACK INTO ENGLISH

If a dog gets in here it will be killed.

INTO JAPANESE

犬がここに入ると殺されます。

BACK INTO ENGLISH

If a dog comes in here it will be killed.

INTO JAPANESE

犬がここに入ってきたら殺されます。

BACK INTO ENGLISH

If a dog comes in here it will be killed.