You can refill them many times. https://aax-us-iad.amazon.com/x/c/RD5M0vNrntNUZckwCXxCbnQAAAGGil_wkwEAAAHCAQBOL0EgICAgICAgICAgICBOL0EgICAgICAgICAgICDpvP-4/http://www.amazon.com/dp/B083QMKF11/ref=syn_sd_onsite_mobileapp_0?ie=UTF8&psc=1&pf_rd_p=a6784443-9464-4ebb-b5a9-ab90e2b24a6f&pf_rd_r=Y8RRNGATCNQXXRKWM39T&pd_rd_wg=92rfB&pd_rd_w=3U8Ah&pd_rd_r=1cec1577-4f46-41ca-ad78-e4f02aa9b2e2