Please help - child constantly having accidents

I would use napisan for cleaning his clothes. It's used to baby poop explosions so should be able to handle the smell and stains.
I would stop the laxatives. Or at least try and reduce how much he's having, he definitely shouldn't be going multiple times a day. Maybe try a laxative every other day and see if his need to go reduces? He doesn't sound constipated anymore!

I would ring ERIC and ask for some advice. I would expect them to say do the disimpaction again and then help you work out a maintenance routine. That is harder than the disimpaction stage. We ended up with sodium picosulfate only for the maintenance stage. It took 9 months ish for us to get sorted from first disimpaction.

I wish you luck op. GP’s are so cr*p with this kind of thing. Continence nurse we saw changed our lives - literally.

also at 7 I’m not surprised your ds isn’t brilliant with sorting out his pants. Deep breaths & patience and lots of encouragement

it could be that he’s not taking himself to the toilet when he first feels the need to go so you might need to set him a routine of toilet sits with feet on a little step or stool & they sometimes recommend rocking forward & back with a soft (big ish) ball on their knee. Our nurse called it ‘rock and poo’ - once for each year of their age

obviously food makes a difference but that’s probably tricky - drinking water is really important though

have you tried the dettol laundry cleanser? I found it helpful x

We had this with my daughter when she was 7. Constant poo accidents. We also went down the constipation route, made sure she drank 1.2 litres of water a day minimum (or squash, not milk), and made sure her diet had plenty of fresh fruit/veg and minimal processed foods. We then had to make sure she sat on the toilet an hour after her evening meal for a considerable time to try and empty her bowels. It did work eventually but took about 12 months to be mostly accident free. She is now 9.5 and does still have the occasional accident, but sorts herself out.

Getting frustrated won't help the situation, I know that is easier said than done but the meltdowns are likely to be because of the shame he feels and that shame may also lead to him trying to hold for longer and/or being anxious about going. Just quietly clear away the pants for him. A typical 7 yo should be able to do this this independently but he's clearly not at the same developmental stage as a typical 7 year old.
Make a claim for DLA, covering the extra costs with a child's health conditions is exactly what it is there for.

You said ‘felt’ which stood out to me, Have they actually confirmed if he was constipated, or was it an assumption based on his symptoms?
Because if he wasn’t and he’s taking doses of laxatives it will get worse.

I hear you, I have an almost 6 year old that has phases of this. We’ve exhausted medical causes.

My only advice is on the laundry, rinse in machine before washing cycle, bio powder on long wash, extra rinse in machine, dry in sunlight.

The shit is shit.

Have you trialled any food eliminations? If you haven't then I'd be removing dairy and soya as a priority.

It’s good that you’ve been referred to the right medical team. Continence nurses are also great if you have the service in your area.

On how to clean this: rinse the solids out (in the loo) 60 wash with a capful of zoflora instead of fabric conditioner.

It might be worth contacting the ERIC helpline when they open on Monday. They specialise in this, and will be able to offer you advice as to what to do next Home - ERIC. Does he have any additional needs at all?