Resident evil 5 old key

[MaxPayne2]

Can any one tell me what's the old key in resident evil 5 , i am playing as Chris in the game and i got this old key, but i dont know for what it is .
Thanks for reply .

[robodude]

The key is used to open the door to the El Gigante pen, if the player does not go through the Ganado Camp.

[Mr. Boo Bear]

When you are Chris, you get a OLD KEY to open the door that will take you to the HERBICIDE (first floor, Mansion East Wing).The Jill can get the HERBICIDE with her lockpicks.Armed with HERBICIDE, use it on the irrigation system and turn the valve handle "Up" or "Clockwise" or just select the left-most choice.

[reddevil6]

Here are all the location of old key: you will get key from Mansion West Wing at

• Kitchen, basement
• Bathroom, first floor
• Save room, first floor
• Researcher's bedroom (near room with Wind Crest), second floor
• Researcher's bedroom (across from tiger statue), first floor

And here are all the Old Key Locked Doors at Mansion West Wing.

• Room holding BROKEN SHOTGUN at first floor
• Door leading outside to COLLAR at second floor
• Door leading outside to HERBICIDE at first floor
• Room holding the WIND CREST at second floor
• Gate past the crow-filled art gallery at first floor