It has been here a wet year , I think we are about 18 inches about normal rainfall. I have never had a issue with diesel bugs, It is strange that my bulk tank does not seem to have them in there, but my 50 hp foton does, not bad. I have caught them in the sediment filter before the main canister filter but it has made me treat my bulk tank and the fuel tank on the tractor. So just as a reminder check your filters so if you have them you can minimize their effect.