The only thing they need to be chewing a lot of is hay. Hay is the main part of their daily diet.
Do your piggies eat hay properly?
Are you carrying out the routine weekly weight checks? This is the only way to know they are eating enough hay and remaining healthy.
If there are dental problems, then their hay intake may be reduced, they will be losing weight and will need to be seen by a vet.
Commercial chew toys are not needed and are often ignored.
Piggies generally don’t play with toys, and chew toys dont keep the teeth wearing down.
Carrots also will not wear their teeth. The only thing which effectively wears their teeth is the abrasive silica in hay and grass.
Also, carrots should not be given to them daily. They are not healthy as they contain too much sugar, and are high in vitamin A which too much of isn’t healthy. A tiny piece of carrot as a very occasional treat is fine but it should not be more than once a week.
Critter pops - I’ve just looked these up and if I’ve found the right things, then they should not be given to guinea pig. The ingredients are not appropriate.
Long Term Balanced General And Special Needs Guinea Pig Diets