Reply. Wet & Forget Shower is a new product to the United States but has been used in other countries for a number of years without any problems similar to what you’ve described. Compare. Wet & Forget. W&F apply early morning or late evening when evaporation is slower and no rain for 4 to 5 hrs Product works great call company for information - they are very helpful and informative. eCTM can only be collected at Canadian Tire gas bars on fuel purchases.