The glue is really a silicon adhesive. Mine got really tacky nasty, so with some patience and mineral spirits , cleaned it all up and used the 3M auto trim double sided tape to hold everything in place. Did not take a lot of tape. Worked for me.
The inserts for house entry mats, the inserts, one can change, are almost a perfect fit to sit on top of the rubber treads to wipe feet on.
2014 Sunseeker 3170 DSF
Dorothy, Garrette and Miss Bella.
Retired and having fun.