They can hold 100's of pound of stuff,and still function fully.They loot much faster then you do,and you can bring 5 of them if you have a passenger van.

Clear an entire kicthen in like 1/6 the time,and never have to worry about weight.

When you get back to base,either leave them with all the food they picked up,which means they wont need to draw from the base for ages....or tell them to "clear inventory" and stand back while the mound of food grows :)