22 miles Thursday afternoon/evening, mostly gravel. Many flats on the front tire recently and after patching five pinholes in one tube since last week I decided to put in a new tube. Another flat Thursday anyway. Mostly grass burrs, some tiny bits of glass. These are just barely poking through, nicking the tube so slightly I get slow leaks that are hard to find and patch. I had to put on 2x reading glasses and use tweezers to find and dig out the tiny grass burrs.
I stopped at the nearest bike shop along the way to use the air pump they have available for customers. The mechanic wasn't too busy and offered to add Slime to the tube to see if it helped. Didn't charge me. If it does help with these tiny pinholes I may go back and buy some pre-slimed tubes or a container of sealant and add my own.