Less than half price on the best wood preservative

NOTE: THIS OFFER IS NOT YET ACTIVE. I am posting it to see how many buyers may be interested. Please leave a comment if you're interested or have questions. 

Several years ago, after discovering some rot and termites in my porch and fence, I went on a hunt for an effective wood preservative. I did a lot of research. 

I ended up buying a gallon of "Copper Green" for $35 at a local hardware store. Effective, but a little spendy. 

Further research revealed that this product is just a 1.18% solution of something called Copper Naphthenate (Cu-Nap for short). If you know where to look and buy in bulk, you can find this in concentrated form for a lot less, and dilute it yourself with mineral spirits or diesel fuel (I use kerosene I already had, which works fine). 

I bit the bullet and bought 5 gallons of the concentrate (for $259 + shipping & tax) which is far more than I'll ever need—it makes 25 gallons of 2% solution—nearly double the strength of commercial Copper Green. A single brush-on coat protects outdoor wood from fungus, rot, and insects. For wood contacting the ground, use multiple coats. And if you want fence posts to last almost forever, soak the underground portion in a half-strength (1%) solution for 24 hours before setting them. 

Important: if you're building with pressure-treated lumber, you MUST treat all end cuts with this stuff (or buy a little can of "end-cut solution" for several dollars, which is the same thing). 

Here's my offer:

• Bring me a clean gallon jug and $25 (cash only, please). 
• I will put 25 ounces of concentrate in the jug. 
• You fill the jug with mineral spirits, kerosene, or diesel fuel, making sure it's mixed well. 
• You've got a gallon of 2% copper preservative, for less than half of what you'd pay at the store or on Amazon. 
• If you like, you can further dilute this down to 1%, which is adequate for some uses. 
• If a gallon is too much, I can do a half-gallon for $15. 

Notes:

• The preservative has a long shelf life—just keep it tightly capped and out of sunlight which may rot plastic jugs. 
• Don't use indoors—it has a strong odor which will dissipate over a few days or weeks. 
• It has a greenish tint, which fades to brown with exposure. 
• If you use diesel fuel as a solvent, it's recommended to make it slightly stronger: leave about a pint of air space in your gallon jug. 
• Resist the temptation to make it "extra strong". It's not necessary. 
• It's much less toxic than previous preservatives, but there are some environmental considerations. In particular, don't bathe in it, and don't let it come in contact with fish. Because the smell is hard to get out, wear gloves and don't get it on your clothes. 
• This information comes from the supplier: Poles.com; I haven't personally verified it.