I keep a number of those plastic water containers that you can buy at the big box do-t-yourself stores. The ones that fit on top of water coolers. The plastic stoppers fit quite tight. I particularly like the square containers. I think they hold about 3 gallons of water. When I make syrup, I funnel the white sugar into the container and then add nearly boiling water. I stir a little with a long stick, stopper up the container and then shake like crazy. The square containers allow me to rest them on their sides and swish back and forth, turning every so often. Obviously, the mix differs from 1:1 or 2:1 syrup but I never worry about getting it exact. The handles make them easy to carry to the yard. The stopper never leaks and they're just about the right size to heft into the truck if I go to my out yard. Since we're getting close to package season, I'll add that I nearly always feed my packages and I always add Fumagilin B to my syrup to treat for Nosema. Since starting that, I have much better success with package health and especially queen acceptance.