Can i find shrooms in horse and cow poop i live in FLA and it hasent rained in a while does that matter?

The only drugs I wanna do in my life are shrooms weed salvia and try LSD when I'm 18 I've done weed and oxycodone perk and tries heroin I didnt inject though but I only did oxy 4 times perk 2 heroin 1 and I still just like that pot high if u no what I mean and I'm done with the pills but I just wanna do all natrul stuff its not what it sounds like I'm not a drugy but there's this field with a couple cows but mostly horses 2 miles away and almost 4 miles away there's like 60 cows they just strowl along the high way of Fla behind a fence what's the chances of finding shrooms is it worth it if I find atleast 20 ill be happy do you think I can