WARNING: THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS, INCLUDING LEAD, WHICH IS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS AND REPRODUCTIVE HARM. FOR MORE INFORMATION PLEASE VISIT: WWW.PROP65WARNINGS.CA.GOV These balloon fillers are designed to fill latex balloons. These are economical and have long been the industry standard. All fillers are 100 percent leak tested before shipping.