I have been using this same brand (ordering from amazon) for our youth fast pitch softball league for 2 years now. This has been a reliable and solid product.I use this to paint the outfield fouls lines in the grass. I still use chalk on the infields (which are a turface/sand mix).This saves tons of time lining fields and some money. It is a lot cheaper to put these down and then NOT have to reline the outfield foul lines more frequently.Put a nice thick line down and it will easily last 2 weeks (will fade slightly after a week or so as the grass grows or is mowed). I usually touch them up once a week during the season for a couple reasons:1. Then if I miss a week it is still good to play on.2. It looks a lot nicer and it is not that expensive compared to putting chalk lines down in the outfields.3. You do not have to lay out a string again each time if the line is already there from home plate the foul poles. This saves a lot of time. (We have 4 fields.)Couple things:1. If your line is too "thin" as in a 2 inch line instead of 4 inch... check the orientation of the can or the setting on your line machine. The can has to be oriented correctly in the machine (and each one is different) to get the 4 inch line.2. The first time you ever do a line... pick an area you do not care about and do a couple test strips of 6 or 8 feet to make sure it looks how you want. Subsequent times... you should not have to do this. I just did that when the very time first time when I started using this kind to make sure I knew what to expect. Have not done it since.3. The one odd thing I find with the cans when i pull them out of the box (and it may just be my line machine) is that the plastic spray tips are "far" out on the end of the metal nozzle. However, take 2 seconds and just slide them down (by twisting on them). They are not locked in place and slide down easily. Like I said... they may be fine out of box for some machines, but for mine I need that extra fraction of an inch to make them fit perfectly and produce a proper and nice thick 4 inch line.