Delta...I have to wonder what they use... indeed.
Just to give you an idea...there are what I call 'nail factories' on every block, literally. From where I live I drive 3/4 mile to my nearest stores.
UPS, Realtor, Dentist, Chinest Rest, Bagel Cafe, Bashas Supermarket, Bank of America, Wells Fargo Bank instore, Subway, Drycleaner, GolfCart store, Walgreens Pharmacy, Childrens Boutique, Hairdresser, Nail Factory.

a mile down to the next intersection:
Hairdresser, CVS Pharmacy, Mexican Restaurant, Insurance Co, Realtor, Fitness Studio, Tanning Studio, Italian Pizza joint, Nail Factory,
1mile south of there: Safeways, Italian Rest, Furniture Store, Health Food Store, Hairdresser, Optician, Nail Factory...
If I drove in a square 1 mile east, same thing and Nail factory,
In the middle is a sumptuous resort which now boasts a free standing brand new Elizabeth Arden Spa.... hmmm.
Maybe I should find out? The radical inside of me has simmered down a bit these days...although I did complain to the Department of Mines, the County and anyone else I could find about the huge open cast mine to the east of us

Ahhhhhhh
"Living in Americaaaaah at the beginning of the millenniiiiiiummmmm"