I don't know if many of you bother with this little trick, it was passed onto me by a fella that had been in the business for years and I myself have used it for years yet every time I meet another window cleaner checking out my gear they seem surprised that I use a 'cool box' and not a bucket. Fill with hot water at breakfast and it will still be hot at lunch time. Also has lid so does not spill in back of car. Helps keep the cold off the fingers. And as the WFP boys keep on... Hot water cleans better.... You can get from a car boot sale for about £2 you can get from Wilkos for about £10 or you probably got one in your garage doing nothing. Hope this helps some of you out. Cheers.