Crop Circle Drop Rate

I'm need the last three crop circles:
Room 51
Silhouettes in Laboratory
Mist in the Hall

I'm still waiting for the mist to appear, but I have attempted the other two so many times. I've used about 1000 Containers and 1000 batteries so far and I still don't have the crop circles. I've used a turtle at all times and taken a 10% item drop helper where possible.

Is this normal?

reefs.endeavour wrote:I'm need the last three crop circles:
Room 51
Silhouettes in Laboratory
Mist in the Hall

I'm still waiting for the mist to appear, but I have attempted the other two so many times. I've used about 1000 Containers and 1000 batteries so far and I still don't have the crop circles. I've used a turtle at all times and taken a 10% item drop helper where possible.

Is this normal?

That's been my experience. The drop rate for the last two or three is horrible. I am stuck with:
Trade with gypsy baron
Silhouettes in the laboratory