OMG! I love it. I spent my life throwing out cans with lots of remaining fluid in them, whatever it is, paint, WE-40, lubricants, you name it. I am going to try it. THANK YOU FOR SHARING IT.

Great green tech to NOT waste anything on our planet, that has already been created. Some dummies will ask (does that also work for (fill in product name) as if the can colour or liquid inside makes a difference). But speaking of wasting, at 2:24., we GET it, no need to half empty your remaining fluid to hammer home that you pumped air into the can. PS, I used to service compressors, and today, still have units for sale- from 5 - 125 HP. We know air.

It's often the simple, humble process that is quite profound. This is one of those moments. Nicely done!

Thanks for great idea. Was always running out of WD-40 pressure so I tried your technique today. Had to cut about 1/4 of rubber off the base of valve stem so inside brass tube would press on on can stem. You have to use this valve stem to press open can white stem to get air pressure into the can. Air pressure along is not enough to overcome the can stem valve.. Your technique works, thanks a bunch.

I used to keep cans in horizontal and upside down to extract ; but this method will extract 100% of left over contents! Great idea!

This was my "trick" as well since the 80's, certain manufacturers either didn't use enough propellant or the pickup tube inside the can was nicked and allowed too much gas to escape during normal use. This is definitely a way to get out almost all of the product. I'm sure you have helped a lot of people to get their moneys worth. 🏻

Another thing you can do in a pinch, is put the can in a freezer for a while, then press down on the cap after it's had time to chill and it will pull in a bit of air. Not as good as using a compressor, but it will allow you get a little more out.

Great idea.. I clean spray paint can values by turning the can upside down and spray until nothing but air but find that I end up over time with paint left in the can and out of air. This method will allow me to utilize the complete can of paint.

I am ashamed to tell how many of these cans have cost me 33 1/3 % more than I had paid for them. Thank you so very much for this tip!

This has been a long standing history with my experience with WD 40. They should be filled with a butane/ propane mix. This propellant will partly desvolve into the solution that will release as the product is dispensed. I believe they are filled with CO2. Ive had many cans go dead, and have wrote the manufacture of WD and they have sent me replacement cans, so koodo's to them, I appreciated that they addressed my issue. I have now 4 cans of WD with plenty of product in the can, but no propellant to extract it I think I will try this method, but with propane/ butane mix and see if this improves the performance of the dispensing.

Thanks I was going to throw a half full can out your simple remedy worked perfectly . Thank goodness for you brilliant youtubers.

my air compressor came with the ‘needle’ to fill up soccer balls, etc. just the right size to stick in the middle of the spray can nub, push in, and air goes into the can