Very handy stuff for sure.But for alot of those solutions on the video,there are easier ones that use household items.Squirrel problems...try hot sauce where they are doing their thing. They hate it, they will give you an earful! Or a few peppercorns where theyre digging and its wet from watering.Toothpaste with its fine grit cleans silver real good. I used WD this summer for a wasps nest startup,it worked.I still have some old mink oil for leather,same viscosity as WD,so I can see using WD in that "penetrating"way. In general though,I always look for the least toxic solution. My household cleaning is dish soap,vinegar,baking powder ,laundry detergent(enzyme cleaner) or a mix of some of those. A little bleach,the nuclear option maybe but it will etch a surface which sometimes you want like muriatic acid. Vinegar is a milder alternative. No more fancy,toxic cleaners lying around inside the house as there are always fumes that you breath.Cant attest to WD40 as far as its toxicity but its mild enough to clean your motor greasy hands compared to a solvent.As far as my bikes and chains,love it. It foams,like toothpaste or drain cleaner to expand and push out the stuff. And the amazing PL construction glue. Foaming is a breakthrough concept added component in alot of applications to boost its performance.Oh yea,and WD40 is also great for preventing rust,its original purpose!