Hey Honeask
Welcome to Wild Texas.I will have to look at Wally World for the little moats sounds like a good deal.Turn Keys ideal about vasoline is working pretty good so far.I don't know if anyone has ever been inpailed ,but i've been bumped into a time or two ,most of the time they just scatter away.The couple of times I got bumped I was filling feeders,I guess not as fast as they wanted.Have a great day and Welcome again.
srds
Have Fun