Need phytogenic to help inhibit Aspergillus

I am facing a challenge at present where dried waste bread and cassava flakes were used to replace maize due to high cost of maize. I added toxin binder to the feed and pelletised but still have high mortality. I have lost a total of 22 birds out of 152.
need help on prescription on phytogenic i can get around to help inhibit aspergillus as most pharmacy around do not sell liquid toxin binder and the powder ones arent pack in package that are affordable.