I have an autofill built into my pool. Unfortunately, the crickets love to get in though the finger holes of the lid. I have tried the flood them out and suck all the water out (remove any eggs/etc), but they just keep coming back. I've tought about gluing some plastic scrubbers into the holes to prevent the adults getting in, but those scrubbers are not dense enough to keep out the small ones. In addition, the scrubbers would decay fast in this Arizona sun and make a further mess in the filler. I guess I could glue window screen patches on the back sides of the holes that allow enough of a finger in to lift the lid, but keep the varmints out.
I have thought about dropping a chlorine tablet in there to keep them out, but I run a liquid chlorine setup in my pool and I'd rather not get the runaway CYA. I have also thought about adding chlorine directly to the filler bucket, but I;m sure over time the levels would equal out in my pool at the crickets would be back. I'm really looking for a once and done prevention method.
Has anyone else faced this issue? Any tried and true methods before I go experiment?