If you cant afford the expensive flea stuff then this is okay to temporarily get rid of existing fleas. You need to reapply weekly tho to get rid of eggs hatching and that so it’s not great for long term solution and you really need a preventative which this is not.

They work well if you dog already has fleas to get rid of the fleas, but you need to use a flea pipettes to actually kill the fleas for a month.
Although you need to put the dog out or we found the fleas would try to jump off them onto us.

When I gave him capstar my dog spent the rest of the afternoon throwing up. I notice he wasn’t scratching but the next day he was didn’t do anything only for the first day. It’s expensive & I won’t get again as he was so sick