Is the Last Record Preservative system a worthwhile investment?


I take great care in my record collection.
1. I have a manual record vacuum cleaning machine. I also use an enzyme cleaner on a few really dirty ones.
2. I replace all paper sleeves with plastic ones.
3. I use groove glide on only the records in really bad shape. Around 1 percent.
4. I use a record jacket to protect the covers.
5. I meticulously keep the stylus clean.
6. Use a brush everytime I play a record.
  My question being is; will the Last system actually improve the sonics even after all the care I put in to my collection?
How much time is involved treating a record? How much per record does it cost if I buy the larger treatment kits? Id like to hear your experiences with this product. I have close to 3000 records. My analogy is like a great movie that I have never seen. Wow you just now saw that? Will I have an aha moment using the Last system like oh wow, I should have seen that movie years ago. Lol
128x128blueranger
Thanks for the link to Larry Archibald's Stereophile review, has2be. I had seen those microscope pics of Last treated and untreated grooves, but it was years ago. Michael Fremer has also reviewed Last, and is an enthusiastic endorser. You know who else is? The snake oil suckers at The Library Of Congress, who were early adopters of Last Record Preservative. As my momma use to say about anything uttered, consider the source.
I can't find this answer. How many records does a 2 oz bottle treat??? Thanks for everyones opinion. I might just treat my most frequently played records
 
@blueranger 

Here it is straight from the source........


https://thelastfactory.com/last-record-preservative/how-many-records-can-i-treat-with-the-cleaner-an...
bdp24 - When I used Last, I first cleaned the records on a Nitty Gritty 2.5i.  If I recall correctly, I also used a fluid named "First" which was a "pre-cleaner" and, I think, was made by the folks who made Last.

On Last-treated records, the surface noise I heard developed only some months later.  

Who know the reason(s)? Maybe I got a bad batch?  I own several thousand LPs and haven't run into this problem before or since.  In any case, I now steer clear of Last.

@rshak, First was made by Nitty Gritty, but was discontinued because some chemical it contained was banned by the EPA. It was as you said, a heavy-duty pre-cleaner, made to remove mold release from new LP's before they were cleaned with regular cleaning fluid on their RCM's. My first (no pun intended ;-) RCM was a Nitty Gritty, but I found it lacking. I much prefer my VPI, but the newer Okki Nokki, Pro-Ject,  and Clearaudio machines look really good too.

If a single application of Last is done to an LP, I can't see any reason that LP would develop noise months later. If anything, I would expect the opposite. Maybe it's the snake oil in the Last ;-) .