yeah, my results have been very similar to yours - similar enough that I could have written your post. With the exception of little trees and towels, I view
vending very much as a convenience item, not a big profit maker. I too would like to change that, we're slowly chipping away at it.
I'm finding that people like a choice in glass cleaners. The QD 2oz bottle with towel sells Ok, simoniz glass cleaner wipes (10/pkg - see next comment), and we have another brand in there too, cant recall which one at the moment.
Wipes that have 10 in the package (eg simoniz "cleaning wipes") sell MUCH better than those with 1 in a package. Much better. We've eliminated almost all of our "single wipe" products at this point.
Customers have asked me on several occasions which product to use on their dashboard, so we decided to try a case of "Dash wipes" last year, we put them into a drop shelf vendor out at the vacs. They've become one of our better sellers.
Armor all continues to sell, we have the sponge packs in drop shelf vendors at the vacs and we have the spray pump bottles in our shur-vend. The nice thing about the pump is that the customer also buys a towel.
Speaking of towels, we have 4 different microfiber towels, bulk white paper towels, QD blue cotton towels, and terry cloth. They all sell well except the microfibers, that has been a disappointment.
Also a bit disappointed with how few sodas/water/gatorade we sell. Enough to keep selling them, but barely. Again, we view selling drinks as mostly a service that we offer to our customers.