the vet said casually oh, just put it in their food
kitten 1 ate hers
kitten 2 ate as far as the tablet & then stopped & wouldn't even look at it. I took it away, ground the tablet up, sloshed the food about & put it down again - still nothing
that was a week or so ago - kitten 1, which was smaller, is now gaining weight like mad & is bigger than kitten 2, who has hardly grown at all, so I believe she must have worms (yes?)
today I gave kitten 2 some cheese - she liked that, so I hid the tablet in another bit of cheese - no good
did the same with some ham - ditto
I don't seem to be able to get her mouth open to put it down her throat 
I have bought some spot-on wormer but it's not for kittens under 1kg, & she still is - nearly 11 weeks old & only 850g - should I use it anyway, or could it harm her???