I have a theory that the drop rate for something goes down when you have very few of that object (less than around 20). No proof, but just anecdotal evidence after years of playing.
So i wait until i have almost 50 fertilizers before making another Mitt and avoid going below 20. It seems to work in the sense that my drop rate is consistantly higher than 1 in 10. I have 7 conservatories and they drop, on average, 3 out of 7. The cows drop usually 2 out of 10. Try it - it just means waiting longer for the first Mitt. I have only 4 more to go, then i am finished!
Hope it helps!
Originally Posted by
possibilitys
S
I agree with your theory. I tried it and it works. I have 2 kingdoms. One had only 5 poo bags and the other had 21. The one with only 5 got no poobags from 9 conservatories. The one with 21 received poo bags from almost every hit on conservatories and cows/sheep and now has 42.