US Where to buy silkworm chow in Canada?

[Firewallx]

Hello everyone. I am hoping that you guys can point me in the right direction of a supplier who ships silkworm chow to Canada. I'm getting fed-up of the unreliability of the local pet shops. Too often they haven't got any in stock. I figured I'd try to get the powder and mix it myself.

I already checked Coastal silkworms and they are sold out of the half pound format.

Thank you in advance.