How much effect can i expect from a anti-flea pellet sized for a dog significantly lighter than mine?

dale_r

New member
Have a big dog who recently caught some fleas from a stray, and i gave him one of them pills that keep them protected for a few weeks. Only afterwards i remembered to check , and the pellet was for dogs under 20 pounds(10kg), and my boy is over 50 (27 kg).

Will it just straight up not work? Will it work but last less time? Do i need to buy a new one or should i wait for the current one to run its course? Its biting cold and to say giving him a bath would be a chore is a severe understatement.
 
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