i never treat unless im advised to do so , however i test them regulary , all meds needed would cost over £100 test £30 its a no brainer the more you pump into them the more you'l have to continue doing it loosing there natural immunity if they cant cope it show there weakness proping birds up with medication is a short term fix , but will end in nowt but heartache and birds that ail every time have an outing in a race basket , certainly a slippery slope you wouldnt put a child through chemo therapy ' just incase ' :-/