I've seen this video and looked at the stuff on Amazon. Looks like an amazingly versatile bit of gloop for anyone that needs to bodge things from time to time. A bag of it is pretty cheap on Amazon as well. There are a few different brands, and some that come with pigments as well.
Moderator, Treatment Free Beekeepers group on Facebook.
https://www.facebook.com/groups/treatmentfreebeekeepers/
Try 100 things. 2 will work out, but you will never know in advance which 2. This tiny ad might be one:
grow your own garden and build your own home in the gardening gardeners program