Straight oats will not flow through the guide gear spreader...ask me how I know. The DR Power Equipment 125# Spreader will but baby the on/off switch or update it to something worth having. That simple switch is a PIA about making a good connection. The bottom slide door needs silicone lube also or atleast mine does. If you have the money a higher end Swisher or such might be better.

Bottom line... The DR spreads oats and has an agitator that helps them along but be preparded to perform minor fixes every time you want to use it. I'm handy with such things so it's worth the hassle to keep it running. If you are not, try something else.