I plan on putting some 5 gallon buckets in racks on my pw trailer for the different chems I have to mix. My uncles Dairy Queen uses these nice buckets that come with a lid and a spout, just right to fit that little injector hose in.Do all the buckets have to have those hazmat looking stickers with the different colors on them. Say for instance if you have a 5 gallon bucket of a bleach mixture? By the way, a nice old fellow gave me the idea for the buckets in racks on the trailer!