A custom sign sends exactly the message you want. Use a "keep out:add your wording here" sign. There is a reason signs are so popular.
Size: 18" x 12" Material Type: Heavy-Duty Aluminum Sign, 63 mil Verified Purchase
Size: 14" x 10" Material Type: Aluminum (40 mil) Verified Purchase
Size: 10" x 7" Material Type: Aluminum (40 mil) Verified Purchase
Met my expectations
...so it did!