Innovant Supply Anti-Slip Tape - Indoor/Outdoor Safety Grip Non-Slip Tape, Strong Friction Anti-Skid Grit Surface - Increase Grip on Stairs, Truck Beds and Equipment - 4 Inch x 16 Foot (Industrial)

This item has been a great product for my use on my wooden stairs

Dampness effected the adhesive and some of the strips fell off. The ones that stayed put seem to be working well. UPDATE; After a few weeks all of these adhesive strips fell off. FYI I was attaching them to pressure treated wood stair treads.

If you have a ramp that gets slick when it rains, this is what you need

Great

worked well