Gorilla chews! They're sticks but they don't splinter the way a normal stick does so there's no choke risk. It costs a pretty penny but they do last a long time.
Have different sizes depending on how big your dogs are.
Yes! Gorilla chews Ware 089654 Gorilla Chew Natural, Medium, 1Piece https://www.amazon.com/dp/B017D9F9U6/ref=cm_sw_r_cp_api_glt_fabc_DHWD2EC979KGBFEVR2Z7