What is the difference between caution tape and danger tape?
Color and message. Yellow caution tape marks a spot where people need to slow down and pay attention, like a wet floor, a low clearance, or a work area they can still pass with care. Red danger tape means stop, do not cross, the hazard on the other side can hurt you. Both come plain or preprinted with do not enter, so you can pick the exact warning your site needs. The simple rule is that yellow warns and red forbids.
What does the mil thickness mean, and which should I choose?
Mil is how thick the tape is, and thicker tape is tougher. The 1.5 mil is the everyday choice for indoor and short term jobs, easy to string up and cheap by the roll. The 2 mil is heavier and holds up better outdoors, in wind, and on longer runs where you do not want it tearing. If the tape is going up for a day inside, 1.5 mil is plenty. If it is fighting weather or staying up for a while, step up to 2 mil.
How much tape comes on a roll, and can I buy in bulk?
The rolls run 1000 feet each, which covers a lot of ground before you need a new one. If you go through tape often, it also comes in a 12 pack, so a crew or a facility can keep a full case on the shelf and never run short mid job, and that pack is TAA compliant if you buy on government contracts. The 12 pack drops the price per roll too. Grab a single roll for a one off, or a case if taping off areas is part of the routine.