we dd start have reflux on she second week and the one thing that seem to sooth she be a plain vacuum cleaner or a hair dryer , but we end up all annoyed !! ... we day care provider tell we about the sleep sheep and we actually have receive it as a gift but have not really use it on those ocassion where we dd be unconsolable due to the reflux ... this thing work !!! it make she so calm and every time she look sleepy we just start some ocean wave sound and we feel sleepy with she too !! ... also , this one be the small one and it be so practical to take in the car , the stroller , the swing , the crib ... anywhere ... so we have one for day care and one for home ... at first I do not think it would work but it do , and wonderfully ...