For a non chemical way, you can use a blow dryer and a razor blade being careful not to scratch the surface.
Or... use can try Goof Off. I would see if would discolor the shower in a inconspicuous place first.
Mark & Susan
'13 Cruiser Patriot 335SS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension Member - "Northeast Adventures RV Rally Group" & "Mason-Dixon Bunch"
Glue...I would try a product like Goo Gone or Goof Off first. Read the labels. One is Citrus based and the other is Chemical based. For silicone or latex caulk, I use a product called Motsenbockers Silicone and Latex Caulk Remover (from Ace Hardware). It's a gel you spread on, wait 10 minutes and scrape off. Works great and is safe for plastic surrounds.
Stan and Terri
Oak Harbor, WA
2008 Chevy 2500HD D/A
2007 Cruiser CF30SK
Glide Ride Pin Box
Reese 16K Slider
I wouldn't use goo gone or goof off! I learned this the hard way in one of our other trailers when trying to remove some stickers from the shower surround. That stuff will make the plastic soft and make it look worse then leaving the stickers. You can use WD-40 or we also use stuff we get from the dollar store called Awesome. Both of these will work good and not damage the plastic.