Burnit is listed on Trader Joe, but most people now prefer to use bogged finance. https://app.bogged.finance/avax/swap?tokenIn=AVAX&tokenOut the contract address to pull up Burnit in their database is on snowtrace: https://snowtrace.io/token/0x9ccad19669259c1fbf13fda959400c871b3d0e00#balances