I live in a quite old (unsure of yr built) rental house with no vents anywhere (I have searched and searched). There are not a lot of fixtures, 1 toilet, tub and bathroom sink, a double kitchen sink and washing machine. All the fixtures go straight into the floor with the kitchen sink being the only on with a p-trap. When we use the toilet or the kitchen sink the washing machine makes a drip, drip, drip noise. The kitchen sink drips when we use it also. The ptrap on the kitchen sink is below where the two sinks are plumbed together. My question is if I install ptraps on each of the kitchen sinks and the washing machine will this noise stop? I don't really care if everything is done to code or as a bonded plumber would, as this is a rental house and my landlords don't care. I want a quick fix. Other info is that the main waste water drain outside has a "vent" of sorts, being the 4" pipe has a t with a rubber glove stretched over it. Help! This noise is making me crazy!!

Shut the water off to the washing machine and see if the drip drip noise goes away. If it does, it is a washing machine issue, not a plumbing drain waste or vent issue.

Shut the water off to the washing machine and see if the drip drip noise goes away. If it does, it is a washing machine issue, not a plumbing drain waste or vent issue.

It is not the washing machine making the drip noise but the waste water drain, sorry that wasn't clear 😀

You. Indeed. Have "P" traps on your fixtures or the smell of sewer gas would drive you out of your house. What you have is vents and the noise you hear id the drainage venting through the water in those traps. I broke into plumbing back in the 40's and back in the 20's they built houses with one 4" cast iron main running under the basement to the rear of the house and out the roof. Every fixture was trapped and then connected directly into the main with out a roof vent, Some of those old houses still are plumbed that way and still work.
This explains the noise, if that's your complaint. My question is what do you want to do now?
1- Leave things as they are?
2- Get a plumber in to install roof vents?3- Install AAV's ( if permitted) on each fixture?
What's your pleasure?
Back to you. Tom