Make sure that safety is at the top of your list. Use a "high intensity ultraviolet light wear eye protection" sign. Comes as a plastic sign or vinyl label.

Plastic:

• 55 mil thick, tear-resistant plastic.
• Indoor and limited outdoor use, with good to moderate resistance against chemicals and water.
• Signs can be mounted with screws or nails
• Rounded corners, for longer life and easier handling.
• Includes prepunched holes for easy mounting. The holes are "cleared" (unlike competitors' signs).

Vinyl:

• 4 mil thick, conformable vinyl.
• Aggressive adhesive backing.
• Laminate protects against graffiti and abrasions.
• Labels withstand water and chemical splashes.
• Glossy finish is easy to clean.

Part #s: 

• UV3390 - Plastic, 7" x 10"
• UV3389 - Plastic, 10" x 14"
• UV3391 - Vinyl, 7" x 10"
• UV3392 - Vinyl, 10" x 14"