Here’s a different marking pen that I am using this season. I found it in the tool section of Home Depot. I like it for the loop on the cap to put a string through and the fact that it does’t roll when the cap is off. It remains to be seen how the mark weathers. I think these were 4/$3.99, about the same as a Sharpie, unless you go to the Dollar Store and buy a twofer.