Thats why I like taking the cuts, dipping them in gel and dropping them right in soil. Nothing to clean.....just use sterile tools.Cloning ... keep everything CLEAN - tool you use to cut - disinfect with alcohol.
I'm back to putting cuts in a glass jar with water and maybe a little coconut water. Getting just as many rooted cuts that way than doing my cloner and a lot less work.
For a cloner you have to tear it down after every bacth and run bleach/water solution thru it over night to clean. If I dont do that, the next round % goes WAY down.
I use rapid rooter plugs too....but my % is the same in soil or in plugs so I am slowly switching over to soil as I finish off my plugs. The plugs are definitely faster......8-10 days vs 12-18 days for direct sow into soil. Lots of ways to skin a cat. I just like doing it with the least amount of effort!