No guys don't use them I used their kratom 5 times to exclude any bias It's not strong best etc Very average It could be I needed few days to get used to it Maybe when I have nothing left I try few more days But don't bother Shipping was fast but not fastest From other 2 vendors I got next day from him 2 days He gave extra bonus but so what if its not strong 90% I care about quality and Shipping speed nothing else price of course also But I would pay top dollar for top kratom but can fin