Has anyone made a grease based beaver lure? Something that will stand up to a lot of rain/snow during unsettled spring weather. I’m aware of Lenon’s offering, which I haven’t used. I tried a lot of other commercial lures this spring and some of them couldn’t stand up to daily inclement weather.

No but I've used a piece of 3/4 inch × 5 inch long PVC electric conduit with castor in it, pushed in the bank at a slight downward angle to keep it from washing away with heavy downpours with good results

I've smeared it in a bottle cap and placed the cap so the underside was down when it was supposed to rain. Worked great.

Sac oil is pretty darn water proof and might be a better base than grease
Don't know nothing about beavers but most animals can smell so much better than us humans lures usually hold in there longer than we believe

Never had a problem with keeping the lure in position until a catch. Too much fluid in a lure would not be very durable in lots of rain. However on a good location most lures should last long enough to produce. Flooding can be another situation

Paul, I will say Backbreaker was one of the better ones for durability in my observations. Clint’s lures were good too.

I want to try something with Super Lube grease as the base. I’ve used that for a base with call lures and it’s worked tremendously.

As stated, sac oil is waterproof and is a good beaver attractant. Nothing is going to work in flood conditions.

I use super lube for a base as well. I was actually pondering the thought of mixing castor or sack oil into it not long ago. I like the visual of a glob of lure on a stick it keeps me from re-luring too often. I also like being able just to stir up the existing lure rather than apply more. I will run my Marten/Fisher line until snow drives me out without reapplying lure just stirring it up if it has the right base. Over 6 weeks some years if I am lucky.

People say vaseline "locks" in odor and wont release it.

Back in 2011 I made some cherry essence 'rat lure. Melted vaseline with cherry oil in it for the most part. I doped several hundred rat platforms in 2011-2012 with it.

Those platforms and traps are sitting in a corner of the barn, havent been used for 13 years now. You know what that corner of the barn still to this day reeks of? Cherries!

Maybe it does "lock" in odor. But it also seems to let plenty out as well, and its about as waterproof as it gets!

I've used vaseline quite a bit as a base for marten lure, I've come back to set traps the next year on the same tree and can see my smear of "vaseline lure", if I take a stick and give it a smear, it still has plenty enough odor for me to smell. So maybe it locks it in some, since there is still odor in there, but it surely lasts and is waterproof. I've been using a BTO/lanolin mix for a base that doesn't crust over like vaseline does in cold, dry weather, and adds its own underlying odors to the lure. It works pretty good, the combo doesn't get hard like lanolin does and at -25 is still like the consistency of peanut butter, and it is pretty waterproof, but it doesn't hold the odor until the next year like the vaseline base does.