hi maryjane- aeroeclipse you can buy it on line without prescription- I purchased it last week and have been using it -it is really helpful. i use it with aerobica and i started getting out some cleat gooy stuff- i also looked at that vibrapep device and may be i will buy it. honestly i would try anything to get some sputum for my sputum samples. so far whatever i bring to the lab they say contaminated with (epithalium ?) cells which means saliva. So yes buy aeroeclipse- worth about 20 dollars with shipment fee.