Self-adhesive Contra Vision products can be removed from glass and other transparent substrates without traces of adhesive remaining when the products have been applied as recommended and removed within the time specified. If any adhesive does remain, it can be removed using proprietary cleaning products available in DIY stores such as B&Q/Home Depot or online.
One such product is De-Solv-it ‘Sticky Stuff’ Glue Remover. Use the product as directed paying particular attention with washing the window or panel after adhesive has been removed.
If it’s not possible to obtain a proprietary adhesive removal product, furniture polishes containing silicone, sprayed thickly on the remaining adhesive, will allow the residue to be scraped off after about ten minutes. Wash the window with soap and warm water after the residue is removed. Mr Sheen works well.
Please observe all precautionary advice and dispose of wipes and scrapers as required by local waste handling regulations and recommendations.