You can be sure after a month if not earlier.
no and don't do that any way
1 month old kittens should never be on sale; they are far too young. Kittens four weeks old are only just beginning to take interest in solid food, and are usually fully weaned around six to eight weeks. During and after eight weeks, kittens start to learn how to socialise and play with other cats and humans. Kittens should be only be on sale from when they are ten weeks old; eight weeks at the very earliest. Any earlier than that will cause the kitten to have behaviour problems when it is older and very difficult to manage and to curb such behaviour.
typically a 1 lb kitten is about one month old. Kittens should gain a pound per month until adult weight is reached.
That depends how old the kittens are.
No it can not.
Most shampoo flea control is not safe for cats let alone kittens. You're better off giving the mother cat an advantage top spot, as it will also protect her babies.
Generally the mother cat will go off to a secluded area to have her kittens and she has obviously has chosen to have her litter of kittens under the bed. As long as she is going under the bed to feed them then they should be fine. However, at a month they should be out and walking about so make up a bed (or put a cushion with an old blanket on it) and take the kittens and put them there and watch to be sure the mother cat is tending to their needs.
The mother cat gives birth to the kittens.
A typical cat's first litter can consist of anywhere from 1 to 8 kittens, with an average of around 4 to 6 kittens. The number can vary greatly depending on factors such as the cat's breed, age, and health.
No, probably not, ask your vet. When the kittens are eight or ten weeks old, the mother will have weaned them. If they are not weaned in time the mother may not have enough milk for all of them so you either need to find a substitute mom or ask the vet for some formula.
i have no idea how but i know you can cause my dad has one